Document:

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Exhibit 10.1

                                DATIGEN.COM, INC.

                                                            December 15, 2004

Purisys, Inc.
207 Piaget Avenue
Clifton, NJ 07011
Attn: Aharon Y. Levinas

                           Re:  Binding Letter of Intent

Gentlemen:

         This Letter of Intent (this "Letter of Intent") shall set forth our
mutual agreement regarding a transaction (the "Transaction") whereby
Datigen.com, Inc., a Utah corporation ("Purchaser") shall purchase all right,
title and interest related to the Battery Brain Product (the "Battery Brain
Product") owned by Purisys, Inc., a New Jersey corporation ("Seller").

1.     Purchase and Sale of the Assets. Upon execution and delivery of a
       definitive Purchase Agreement between Purchaser and Seller, Seller shall
       sell, convey, transfer, assign and deliver possession to Purchaser, and
       Purchaser agrees to purchase and acquire from Seller, all of Seller's
       right, title and interest in and to all of the assets specified below
       (the "Assets"), free and clear of any and all liens, pledges, claims,
       charges, actions, suits, proceedings, hypothecation, security interests,
       preemptive rights, right of first refusal or other rights or restrictions
       or encumbrances of any kind ("Liens"):

       (a)    all of the Seller's intellectual property relating to the Battery
              Brain Product ("Seller's Intellectual Property");

       (b)    the goodwill associated with or attributable to the Seller's
              Intellectual Property;

       (c)    all of the rights of the Seller under any and all contracts with
              customers for the Battery Brain Product;

       (d)    all of the rights of the Seller under any and all customer
              purchase orders;

       (e)    all of the inventory associated with the Battery Brain Product;

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       (f)    the equipment that the Seller used or uses for the development,
              production and testing of the Battery Brain Product, and which is
              owned by or licensed to or registered in the name of Seller (the
              "Equipment"); and

       (g)    any and all other properties or assets of all other character or
              description, tangible or intangible, owned by Seller or Aharon Y.
              Levinas ("Principal") and used or held for use in connection with
              the Battery Brain Product.

         2. Consideration. In exchange for the Assets, Purchaser shall pay to
Seller: (i) one hundred thousand ($100,000) dollars (the "Cash Consideration");
and (ii) the number of shares (rounded to the nearest whole share) of the Common
Stock of the Purchaser, to be issued in accordance with the instructions of the
Seller, which will constitute, as of the closing date, twenty (20%) percent of
the issued and outstanding shares of Common Stock of the Purchaser on a fully
diluted basis (the "Equity Consideration").

         3. No Assumption of Liabilities. Purchaser will not assume any
liabilities, costs, debts, claims and obligations of Seller relating to the
Assets or otherwise. All liabilities relating to the Assets shall remain the
sole responsibility of, and shall be retained, paid, performed or discharged
solely by, the Seller, other than the liabilities of the Battery Brain Product
which are specifically assumed by the Purchaser in the definitive Purchase
Agreement.

         4. Appointment of CTO. The board of directors of Purchaser shall cause
Principal to be appointed as the Chief Technology Officer of the Purchaser
within 90 days after the date of the definitive Purchase Agreement, in
accordance with the provisions of a consulting agreement to be executed between
Purchaser and Mr. Levinas.

         5. Directors. Following the closing of the Transaction, the board of
directors of the Purchaser shall consist of five (5) members. Principal shall be
entitled to appoint two (2) representatives to the board of directors of the
Purchaser (the "Levinas' Directors"). Upon any retirement, resignation, death or
disability of any Levinas' Director, Principal shall have the sole right to
appoint a replacement.

         6. Registration Rights. Purchaser and Principal mutually agree to
negotiate, in good faith, an agreement regarding the registration rights of
Levinas for the shares of Common Stock of the Purchaser constituting the Equity
Consideration. Principal shall be entitled to equal registration rights with the
controlling shareholders of the Purchaser, pro rata in accordance with their
holdings in the Purchaser, subject to a lock-up agreement.

         7. Closing. The closing is subject to the following terms:

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                  (i) Payment of the Cash Consideration;

                  (ii)  Issuance of the shares of Common Stock of the  Purchaser
                  constituting the Equity Consideration;

                  (iii) Completion of Purchaser's due diligence review of Seller
                  and the Battery Brain Product to its full satisfaction,  which
                  shall be in its sole and absolute discretion;

                  (iv) Approval of the Transaction by the boards of directors of
                  Purchaser and Seller;

                  (v) Purchaser  shall have received  equity  investments of not
                  less than $900,000, which shall be invested in the development
                  and marketing of the Battery Brain Product;

                  (vi) There  shall be no  injunctions,  restraints  or lawsuits
                  against  the  consummation  of  the  Transaction  or  limiting
                  Purchaser's rights or use of the Assets;

                  (vii)  Receipt of any and all consents and  approvals  for the
                  consummation of the Transaction; and

                  (viii) Execution and delivery of documentation appropriate for
                  the Transaction in form and substance  mutually  acceptable to
                  both parties,  containing  customary  terms,  representations,
                  conditions,  covenants and  indemnities  for a transaction  of
                  this nature, including,  without limitation,  the negotiation,
                  execution and delivery of a definitive purchase agreement (the
                  "Purchase  Agreement"),  and the execution and filing with the
                  proper   authorities  by  Seller  of  any  and  all  documents
                  necessary  to effect the  transfer  of  Seller's  Intellectual
                  Property to Purchaser.

         Subject to the forgoing, it is the intent of the parties that
definitive documentation with respect to the transactions contemplated in this
Letter of Intent shall be executed and delivered within 30 days from the date
hereof and the parties shall use their best efforts to achieve same.

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         The Purchaser agrees that within 10 days from the date this Agreement
is executed and delivered by all the parties, the Purchaser shall advance an
aggregate amount of $100,000 plus $20,000 towards payment of the Cash
Consideration. If the transactions contemplated herein are terminated by either
party, said sum shall automatically be deemed as a loan from Purchaser to
Seller, and shall be due and payable not less than 15 days from the date of such
termination.

         8. Due Diligence. Seller shall provide the officers, independent
certified public accountants, counsel, bankers and other representatives of
Purchaser access to its properties, books, records, personnel, business and
other commercial relationships, and will fully cooperate in order that Purchaser
may have full opportunity to make investigation as it reasonably desires.

         Each party shall cooperate fully with the other in furnishing any
necessary information required in connection with the preparation, distribution
and filing with the Securities and Exchange Commission and any other government
or regulatory agencies or stock exchanges.

         9. No Shop. In consideration of the above, including but not limited to
the $100,000 cash payment being paid to Seller on the date hereof, Seller shall
not, nor will it permit any of its officers, directors, employees, stockholders,
agents, representatives (including, without limitation, brokers, financial
advisors and the Principal) or any other person acting on behalf of Seller, to,
directly or indirectly, (i) solicit, negotiate and/or accept any offer to
acquire any of Seller's securities and/or all or substantially all of its assets
until the execution and delivery of definitive agreements with respect to the
Transaction and (ii) acquire any shares of Purchaser, whether such acquisition
is made in the public markets or via a private sale.

         10. Conduct of Business Prior to Closing. Until the closing of the
Transaction, or termination of this Letter of Intent as provided in paragraph 14
hereof, Seller and Principal shall use their best efforts to preserve and
maintain their assets and shall conduct their business only in the normal and
ordinary course. Principal, Seller and Seller's subsidiaries and holdings, shall
not, among other things, without the consent of Purchaser, do any of the
following: (i) enter into any transaction outside the ordinary course of
business; or (ii) enter into, assume or become bound or obligated by any
agreement, contract or commitment or extend or modify the terms of any presently
existing agreement; or (iii) increase the compensation of any employee of
Seller, or (iv) make any payment or incur any obligation to any affiliate of
Seller, or (v) sell, assign or license any material assets of Seller or any of
its intellectual property; or (vi) establish any new, or modify any existing,
employee benefit, compensation or stock plan; or (vii) declare or pay any
dividends or make any distribution of assets to its shareholder or pay any
bonuses or make any other extraordinary payments to its officers, directors or
employees; or (viii) grant any share options or issue any new shares or any
other securities; or (ix) hire any new employees or consultants.

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         11. Brokers. Seller represents and warrants that it has not retained or
used, and will not retain or use, the services of any broker or finder which
would result in the imposition of a fee to Purchaser.

         12. Expenses. Each party shall bear its own expenses and costs related
to the Transaction, including, without limitation, attorneys' fees and
disbursements.

         13. Confidentiality. Except as required by applicable law, Seller shall
not disclose nor permit its officers, representatives, agents or employees to
discuss the existence or terms of this Agreement to any third party without the
prior written consent of the other party. Purchaser, in its sole discretion,
shall determine the form, timing and contents of announcements and disclosures
regarding the Transaction. Seller acknowledges that Purchaser is a publicly
traded company and, therefore, Purchaser may be required to disclose this Letter
of Intent or the terms hereof in a public filing in order to comply with
securities laws.

            14. Termination. The parties agree to negotiate in good faith the
terms and conditions of the definitive agreements with respect to the
Transaction until this Letter of Intent is terminated in accordance with the
terms of this paragraph 14. This Letter of Intent shall terminate upon the
earlier of the execution of a definitive Purchase Agreement or the providing of
notice by Purchaser of cancellation of the proposed Transaction or this Letter
of Intent to Seller. Upon such termination, the parties shall no longer have any
rights or obligations with respect to this Letter of Intent except with respect
to paragraphs 11 through 18, inclusive, which shall survive such termination.

         15. Governing Law. This Letter of Intent shall be governed by and
construed in accordance with the laws of the State of New York applicable to
agreements made and to be performed therein without giving effect to conflict of
law principles.

         16. Binding Effect. This Letter of Intent shall be binding upon and
inure to the benefit of the parties hereto and their respective successors,
heirs, representatives and permitted assigns. No assignment of this Letter of
Intent or any right or obligation hereunder may be made by the parties without
the prior written consent of the other party, and any such attempted assignment
shall be void.

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         17. Counterparts. This Letter of Intent may be executed in counterparts
and by facsimile, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

         18. Independent Counsel. The parties hereto agree that this Letter of
Intent is the product of negotiation between sophisticated individuals, each of
whom were either represented by counsel or had an opportunity to be so
represented, and each of whom had an opportunity to participate in and did
participate in, the drafting of each provision hereof.

         If the foregoing accurately sets forth our agreement, please execute
where indicated below and return a fully executed copy of this Letter of Intent
to our attention, whereupon this Letter of Intent shall become a valid and
binding agreement between us in accordance with the terms hereof.

                                                     DATIGEN.COM, INC.

                                                     By: /s/Amir Uziel
                                                        ---------------------
                                                        Name: Amir Uziel
                                                        Title: President

         AGREED AND ACCEPTED:

         PURISYS, INC.

         By: /s/Aharon Y. Levinas
             ---------------------------
             Name: Aharon Y. Levinas
             Title:

         /s/Aharon Y. Levinas
         -------------------------------
         Aharon Y. Levinas, individuallyEXHIBIT 10.1

                         WORLD WASTE TECHNOLOGIES, INC.

        UNITS OF REGISTRABLE COMMON STOCK AND WARRANTS AT $2.50 PER UNIT

                             SUBSCRIPTION AGREEMENT

1. SUBSCRIPTION:

      (a) The undersigned (individually and/or collectively, the "Participant")
hereby applies to become a participant in the Units of registrable common stock
and warrants (collectively, the "Units," "Shares" or the "Common Stock") of
WORLD WASTE TECHNOLOGIES, INC., a California corporation ("WWT" or the
"Company"), in accordance with the terms and conditions of this Subscription
Agreement (the "Subscription").

      (b) Before this subscription for participation in the Shares is
considered, the Participant must complete, execute and deliver to the Company
the following:

            (i) This Subscription;

            (ii) The Certificate of Accredited Investor Status attached hereto
as Exhibit A;

            (iii) The WWT Registration Rights Agreement; and

            (iv) The WWT Warrant Agreement; and

            (v) The Participant's check or wire transfer in the amount of
$__________________.

      (c) Participant hereby subscribes for __________ Units at a purchase price
of $2.50 per Unit.

      (d) This Subscription is irrevocable by the Participant.

      (e) This Subscription is not transferable or assignable by the
Participant.

      (f) This Subscription shall be deemed to be accepted only when this
Subscription has been executed by an authorized officer of the Company. The
deposit of Participant's check or wire transfer funds will not be deemed an
acceptance of this Subscription.

      (g) This Subscription may be rejected in whole or in part by the Company
in its sole discretion. In the event this Subscription is rejected in its
entirety by the Company, all funds (without interest) and documents tendered by
the Participant shall be returned. In the event that this Subscription is
rejected in part by the Company, the Company shall return to the Participant the
part of the payment relating to such rejected portion without interest. The
Company shall have the right to allocate Shares among Participants in any manner
it may desire; provided, that no Participant shall be obligated to purchase more
than the number of Shares set forth in Section 1(c) above without such
Participant's prior written consent.

      (h) Participant understands that separate Subscriptions will be executed
with other Participants for the remainder of the Shares to be sold in this
offering.

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      (i) Placement agents and broker dealers, including Chadbourn Securities,
Inc. (an NASD broker-dealer affiliate of Cagan McAfee Capital Partners, LLC),
may be paid commissions in an amount up to but not to exceed (i) selling
commissions from the Company up to eight percent (8%) of the aggregate proceeds
from the sale of the Shares, and (ii) a non-accountable expense allowance up to
two percent (2%) of the aggregate proceeds from the sale of the Shares, and
(iii) warrants to purchase up to ten percent (10%) of the aggregate number of
Shares sold in the offering, exercisable for seven years at an exercise price
equal to the Offering Price, with a net exercise ("cashless exercise")
provision.

      (j) Until the registration statement contemplated by the WWT Registration
Rights Agreement is declared effective, Participant hereby agrees not to, and
will cause its affiliates not to, enter into any "put equivalent position" as
such term is defined in Rule 16a-1 under the Securities Exchange Act of 1934, as
amended, or short sale position with respect to the Common Stock.

2. REPRESENTATIONS BY PARTICIPANT. In consideration of the Company's acceptance
of participation, I make the following representations and warranties to the
Company, to its principals, and to participating broker-dealers, if any, jointly
and severally, which warranties and representations shall survive any acceptance
of my participation in the Shares:

      (a) I have had the opportunity to ask questions and receive any additional
information from persons acting on behalf of the Company to verify my
understanding of the terms thereof and of the Company's business and status
thereof, and that no oral information furnished to the undersigned or my
advisors in connection with my participation in the Shares has been in any way
inconsistent with other documentary information provided.

      (b) I acknowledge that I have not seen, received, been presented with, or
been solicited by any leaflet, public promotional meeting, newspaper or magazine
article or advertisement, radio or television advertisement, or any other form
of advertising or general solicitation with respect to my participation in the
Shares.

      (c) The Shares are being purchased for my own account for long-term
investment and not with a view to, or for resale in connection with, any
distribution or public offering thereof within the meanings of the Securities
Act of 1933, as amended (the "Securities Act"), and any applicable state
securities laws. No other person or entity will have any direct or indirect
beneficial interest in, or right to, the Shares. I or my agents or investment
advisors have such knowledge and experience in financial and business matters
relating to an investment of this type that will enable me to utilize the
information made available to me in connection with the participation in the
Shares to evaluate the merits and risks of participation and to make an informed
investment decision.

      (d) I understand that (A) the Shares (1) have not been registered under
the Securities Act or any state securities laws, (2) will be issued in reliance
upon an exemption from the registration and prospectus delivery requirements of
the Securities Act pursuant to Section 4(2) and/or Regulation D thereof and (3)
will be issued in reliance upon exemptions from the registration and prospectus
delivery requirements of state securities laws which relate to private
offerings, and (B) I must therefore bear the economic risk of such investment
indefinitely unless a subsequent disposition thereof is registered under the
Securities Act and applicable state securities laws or is exempt therefrom. I
further understand that such exemptions depend upon, among other things, the
bona fide nature of my investment intent as expressed herein. Pursuant to the
foregoing, I acknowledge that the certificates representing the Shares acquired
pursuant to this Subscription shall bear a restrictive legend substantially as
follows:

<PAGE>

            "THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO
            RESTRICTIONS ON TRANSFER UNDER THE SECURITIES ACT OF 1933, AS
            AMENDED, AND STATE SECURITIES LAWS, AND MAY NOT BE OFFERED FOR SALE,
            SOLD, ASSIGNED, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED OF UNLESS
            (I) REGISTERED UNDER THE APPLICABLE SECURITIES LAWS OR (II) AN
            OPINION OF COUNSEL, WHICH OPINION AND COUNSEL ARE BOTH REASONABLY
            SATISFACTORY TO THE COMPANY, HAS BEEN DELIVERED TO THE COMPANY AND
            SUCH OPINION STATES THAT THE SHARES MAY BE TRANSFERRED WITHOUT SUCH
            REGISTRATION."

      (e) I acknowledge that I have been advised that:

            (i) The Shares offered hereby have not been approved or disapproved
by the Securities and Exchange Commission ("SEC") or any state securities
commission nor has the SEC or any state securities commission passed upon the
accuracy or adequacy of any representations by the Company. Any representation
to the contrary is a criminal offense.

            (ii) In making an investment decision, I must rely on my own
examination of the Company and the terms of the offering of the Shares,
including the merits and risks involved. The Shares have not been recommended by
any federal or state securities commission or regulatory authority. Furthermore,
the foregoing authorities have not confirmed the accuracy or determined the
adequacy of any representation. Any representation to the contrary is a criminal
offense.

            (iii) The Shares are "Restricted Securities" within the meaning of
Rule 144 under the Securities Act, are subject to restrictions on
transferability and resale and may not be transferred or resold except as
permitted under the Securities Act and applicable state securities laws,
pursuant to registration or exemption therefrom.

      (f) Other than the rights specifically set forth in the WWT Registration
Rights Agreement, I represent, warrant and agree that the Company and the
officers of the Company (the "Company's Officers") are under no obligation to
register or qualify the participation in the Shares under the Securities Act or
under any state securities law, or to assist the undersigned in complying with
any exemption from registration and qualification.

      (g) I represent that I am an "accredited investor" within the meaning of
Rule 501 of Regulation D under the Securities Act and I have executed the
Certificate of Accredited Investor Status, attached hereto as Exhibit A.

      (h) I understand that the participation in the Shares is illiquid, cannot
be readily sold as there will not be a public market for them and that I may not
be able to sell or dispose of my participation in the Shares, or to utilize the
Shares as collateral for a loan. I understand that the purchase of the Shares is
a speculative investment and involves substantial risks and that I could lose my
entire investment in the Shares. I must not purchase participation in the Shares
unless I have liquid assets sufficient to assure myself that such purchase will
cause me no undue financial difficulties and that I can still provide for my
current and possible personal contingencies, and that the commitment herein for
participation in the Shares, combined with other investments of mine, is
reasonable in relation to my net worth.

<PAGE>

      (i) I understand that my right to transfer my participation in the Shares
will be restricted against transfers unless the transfer is not in violation of
the Securities Act, the California Securities Law, and any other applicable
state securities laws (including investment suitability standards), that the
Company will not consent to a transfer of participation in the Shares unless the
transferee represents that such transferee meets the financial suitability
standards required of an initial participant and that the Company has the right,
in its absolute discretion, to refuse to consent to such transfer.

      (j) I have been advised to consult with my own attorney or attorneys
regarding all legal matters concerning an investment in the Company and the tax
consequences of participation in the Shares, and have done so, to the extent I
consider necessary.

      (k) I acknowledge that the tax consequences to me of investing in the
Company will depend on my particular circumstances, and neither the Company, the
Company's officers, any other investors, nor the partners, shareholders,
members, managers, agents, officers, directors, employees, affiliates or
consultants of any of them, will be responsible or liable for the tax
consequences to me of an investment in the Company. I will look solely to and
rely upon my own advisers with respect to the tax consequences of this
investment.

      (l) I acknowledge that I have made the decision to invest in the Shares
solely on the basis of the information set forth in the Company's Private
Placement Memorandum (the "Memorandum"), dated _______________________, 2004,
included herewith, and that no officer, director, or other person affiliated
with the Company has given me any information or made any representations, oral
or written, other than as provided in the Memorandum, on which I have relied
upon in deciding to invest in the Shares, including without limitation, any
information with respect to future operations of the Company or the economic
returns which may accrue as a result of the purchase of the Shares.

      (m) All information which I have provided to the Company concerning
myself, my financial position and my knowledge of financial and business matters
is truthful, accurate, correct and complete as of the date set forth herein. I
agree to furnish the Company such other information as the Company may
reasonably request in order to verify the accuracy of the information contained
herein and agree to notify the Company immediately of any material change in the
information provided herein that occurs prior to the Company's acceptance of
this Subscription.

      (n) I and my affiliates do not have, and during the 30 day period prior to
the date of this Subscription, I and my affiliates have not entered into, any
"put equivalent position" or short sale positions with respect to the Common
Stock.

      (o) If I am not a United States person, I hereby represent that I have
satisfied myself as to the full observance of the laws of my applicable
jurisdiction in connection with any invitation to subscribe for the Shares or
any use of this Subscription, including (i) the legal requirements within such
jurisdiction for the purchase of the Shares, (ii) any foreign exchange
restrictions applicable to such purchase, (iii) any governmental or other
consents that may need to be obtained, and (iv) the income tax and other tax
consequences, if any, that may be relevant to the purchase, holding, redemption,
sale or transfer of the Shares. My subscription and payment for, and my
continued beneficial ownership of the Shares, will not violate any applicable
securities or other laws of such jurisdiction.

3. AGREEMENT TO INDEMNIFY COMPANY. I hereby agree to indemnify and hold harmless
the Company, its principals, the Company's officers, directors and attorneys,
from any and all damages, costs and expenses (including actual attorneys' fees)
which they may incur (i) by reason of my failure to fulfill any of the terms and
conditions of participation, (ii) by reason of my breach of any of my
representations, warranties or agreements contained herein; (iii) with respect
to any and all claims made by or involving any person, other than me personally,
claiming any interest, right, title, power or authority in respect to my
participation. I further agree and acknowledge that these indemnifications shall
survive any sale or transfer, or attempted sale or transfer, of any portion of
my participation.

<PAGE>

4. SUBSCRIPTION BINDING ON HEIRS, ETC. This Subscription, upon acceptance by the
Company, shall be binding upon the heirs, executors, administrators, successors
and assigns of the Participant. If the undersigned is more than one person, the
obligations of the undersigned shall be joint and several and the
representations and warranties shall be deemed to be made by and be binding on
each such person and his heirs, executors, administrators, successors, and
assigns.

5. EXECUTION AUTHORIZED. If this Subscription is executed on behalf of a
corporation, partnership, trust or other entity, the undersigned has been duly
authorized and empowered to legally represent such entity and to execute this
Subscription and all other instruments in connection with participation in the
Shares and the signature of the person is binding upon such entity.

6. ADOPTION OF TERMS AND PROVISIONS. The Participant hereby adopts, accepts and
agrees to be bound by all the terms and provisions hereof.

7. GOVERNING LAW. This Subscription shall be construed in accordance with the
laws of the State of California.

8. COUNSEL. The Participant hereby acknowledges that the Company and its
counsel, Simon, Galasso & Frantz, PLC or Troy & Gould, PC, represent the
interests of the Company and not those of the Participant in any agreement
(including this Subscription) to which the Company is a party.

9. INVESTOR INFORMATION:

(The information below should be consistent with the form of ownership selected
below.)

Name (please print):
                    --------------------------------------

If entity named above  By:
                          --------------------------------------

                      Its:
                          --------------------------------------

Social Security or Taxpayer I.D. Number:
                                        --------------------------------------

Business Address (including zip code):
                                      --------------------------------------

Business Phone:
               --------------------------------------

Business Fax:
             --------------------------------------

Residence Address (including zip code):
                                       --------------------------------------

Residence Phone:
                --------------------------------------

All communications to be sent to:

                 |_| Business or

                 |_| Residence Address

<PAGE>

      Please indicate below the form in which you will hold title to your
interest in the Shares. PLEASE CONSIDER CAREFULLY. ONCE YOUR SUBSCRIPTION IS
ACCEPTED, A CHANGE IN THE FORM OF TITLE CONSTITUTES A TRANSFER OF THE INTEREST
IN THE SHARES AND MAY THEREFORE BE RESTRICTED BY THE TERMS OF THIS SUBSCRIPTION,
AND MAY RESULT IN ADDITIONAL COSTS TO YOU. Subscribers should seek the advice of
their attorneys in deciding in which of the forms they should take ownership of
the interest in the Shares, because different forms of ownership can have
varying gift tax, estate tax, income tax, and other consequences, depending on
the state of the investor's domicile and his or her particular personal
circumstances.

___   INDIVIDUAL OWNERSHIP (one signature required)

___   JOINT TENANTS WITH RIGHT OF SURVIVORSHIP AND NOT AS TENANTS IN COMMON
      (both or all parties must sign)

___   COMMUNITY PROPERTY (one signature required if interest held in one name,
      i.e., managing spouse; two signatures required if interest held in both
      names)

___   TENANTS IN COMMON (both or all parties must sign)

___   GENERAL PARTNERSHIP (fill out all documents in the name of the
      PARTNERSHIP, by a PARTNER authorized to sign, and include a copy of the
      Partnership Agreement)

___   LIMITED PARTNERSHIP (fill out all documents in the name of the LIMITED
      PARTNERSHIP, by a GENERAL PARTNER authorized to sign, and include a copy
      of the Limited Partnership Agreement and any other document showing that
      the investment is authorized)

___   LIMITED LIABILITY COMPANY (fill out all documents in the name of the
      LIMITED LIABILITY COMPANY, by a member authorized to sign, and include a
      copy of the LIMITED LIABILITY COMPANY's Operating Agreement and any other
      documents necessary to show the investment is authorized.)

___   CORPORATION (fill out all documents in the name of the CORPORATION, by the
      President or other officer authorized to sign, and include a copy of the
      Corporation's Articles and certified Corporate Resolution authorizing the
      signature)

___   TRUST (fill out all documents in the name of the TRUST, by the Trustee,
      and include a copy of the instrument creating the trust and any other
      documents necessary to show the investment by the Trustee is authorized.
      The date of the trust must appear on the Notarial where indicated.)

<PAGE>

      Subject to acceptance by the Company, the undersigned has completed this
Subscription Agreement to evidence his/her subscription for participation in the
Shares of the Company, this ____________ day of ___________ , 2004, at
__________________________ , ________________________.

                                       -----------------------------------
                                       Participant

The Company has accepted this subscription as of the ______________ day of
______________________ , 2004.

                                       WORLD WASTE TECHNOLOGIES, INC.,
                                       a California corporation

                                       By:
                                          --------------------------------------

                                       Print:
                                             -----------------------------------

<PAGE>

                                                                       EXHIBIT A

                    CERTIFICATE OF ACCREDITED INVESTOR STATUS

      Except as may be indicated by the undersigned below, the undersigned is an
"accredited investor," as that term is defined in Regulation D under the
Securities Act of 1933, as amended (the "Securities Act"). The undersigned has
checked the box below indicating the basis on which he is representing his
status as an "accredited investor":

|_|   a bank as defined in Section 3(a)(2) of the Securities Act, or any savings
      and loan association or other institution as defined in Section 3(a)(5)(A)
      of the Securities Act whether acting in its individual or fiduciary
      capacity; a broker or dealer registered pursuant to Section 15 of the
      Securities Exchange Act of 1934, as amended (the "Securities Exchange
      Act"); an insurance company as defined in Section 2(13) of the Securities
      Act; an investment company registered under the Investment Company Act of
      1940 or a business development company as defined in Section 2(a)(48) of
      that Act; a small business investment company licensed by the U.S. Small
      Business Administration under Section 301(c) or (d) of the Small Business
      Investment Act of 1958; a plan established and maintained by a state, its
      political subdivisions, or any agency or instrumentality of a state or its
      political subdivisions, for the benefit of its employees, and such plan
      has total assets in excess of $5,000,000; an employee benefit plan within
      the meaning of the Employee Retirement Income Security Act of 1974, if the
      investment decision is made by a plan fiduciary, as defined in Section
      3(21) of such Act, which is either a bank, savings and loan association,
      insurance company, or registered investment adviser, or if the employee
      benefit plan has total assets in excess of $5,000,000 or, if a
      self-directed plan, with investment decisions made solely by persons that
      are "accredited investors";

|_|   a private business development company as defined in Section 202(a)(22) of
      the Investment Advisers Act of 1940;

|_|   an organization described in Section 501(c)(3) of the Internal Revenue
      Code, corporation, Massachusetts or similar business trust, or
      partnership, not formed for the specific purpose of acquiring the
      securities offered, with total assets in excess of $5,000,000;

|_|   a natural person whose individual net worth, or joint net worth with the
      undersigned's spouse, at the time of this purchase exceeds $1,000,000;

|_|   a natural person who had an individual income in excess of $200,000 in
      each of the two most recent years or joint income with the undersigned's
      spouse in excess of $300,000 in each of those years and has a reasonable
      expectation of reaching the same income level in the current year;

|_|   a trust with total assets in excess of $5,000,000, not formed for the
      specific purpose of acquiring the securities offered, whose purchase is
      directed by a person who has such knowledge and experience in financial
      and business matters that he is capable of evaluating the merits and risks
      of the prospective investment; or

|_|   an entity in which all of the equity holders are "accredited investors" by
      virtue of their meeting one or more of the above standards.

|_|   an individual who is a director or executive officer of World Waste
      Technologies, Inc.

<PAGE>

      IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Accredited Investor Status effective as of __________________, 2004.

                                       -----------------------------------------
                                       Name of Participant

                                       By:
                                          --------------------------------------

                                       Name:
                                            ------------------------------------

                                       Title:
                                             -----------------------------------

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