Document:

CONVERTIBLE PROMISSORY NOTE

$720,000.00                                                      Tampa, Florida
                                                                 April 14, 2000

     FOR VALUE  RECEIVED,  TITAN  HOSTING,  INC.,  a Delaware  corporation  (the
"Maker"), hereby promises to pay to the order of CITY-GUIDE ISP, INC., a Florida
corporation,  or other  registered  assigns (the "Holder"),  at 412 East Madison
Street,  Suite 1000,  Tampa, FL 33602, or at such other place as Holder may from
time to time designate in writing, with grace as herein provided,  the aggregate
principal sum of Seven Hundred Twenty Thousand and 00/100 Dollars ($720,000.00),
together with interest on the  outstanding  principal  balance from time to time
outstanding from the date hereof, in accordance with the following provisions:

     (a)  This Note is provided in  connection  with the  Holder's  agreement to
          sell certain assets to Maker pursuant to a Purchase and Sale of Assets
          Agreement between Maker, Holder and others (Agreement hereafter).

     (b)  Interest  shall accrue on the  outstanding  principal  balance of this
          Note  from the date  stated  above  until the date of  payment  at the
          lowest imputed rate for a note of this nature by the Internal  Revenue
          Service will impute for an obligation of the nature of the  obligation
          contained  in this  Note per  annum;  provided,  however,  that if any
          payment of  principal  or  interest  is not made when due as  provided
          herein, interest shall accrue at the maximum contract rate of interest
          permitted by law until such payment is made.

     (c)  Monthly  payments of Thirty  Thousand and no 00/100 Dollars  ($30,000)
          including  principal and interest at the above rate shall  commence on
          May 14,  2000  and  shall  continue  on the  same  day of  each  month
          thereafter  until the entire  principal  balance and accrued  interest
          have been paid in full.

     Payment of principal  and  interest  under this Note shall be made by cash,
check or wire  transfer to the Holder at the  address  stated in this Note or at
such other  address,  or to such bank account,  as Holder has notified  Maker in
writing.  All  payments  shall be made in lawful  money of the United  States of
America.

     This Note is secured by a Security Agreement dated April 14, 2000, executed
by the Maker and a  Guaranty,  dated  April 14,  2000,  executed  by Mega  Media
Networks, Inc., a Delaware corporation.

      FLORIDA DOCUMENTARY STAMPS IN THE AMOUNT OF $2,625.00 HAVE BEEN PAID

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     Any payment of principal or interest  which is not made when due, as herein
provided, shall bear interest at the maximum contract rate of interest permitted
by law, until paid; and, in addition,  the undersigned  shall pay Holder a "late
charge" in the amount of two and one-half  percent (2 1/2%) of the amount of the
delinquent payment, which shall be for the purpose of reimbursing the Holder for
expenses  incurred by reason of such late payment and which shall not exceed the
expense so incurred.

     "Event  of  Default",  wherever  used in this  Note,  means  any one of the
following events:

     (1)  failure  to  pay  any  installment  due  under  this  Note  when  such
          installment  becomes due and payable and  continuance  of such failure
          for a period of ten (10) days after written notice to Maker;

     (2)  The Maker  shall  commence  (or take any  action  for the  purpose  of
          commencing)  any  proceeding  under  any  bankruptcy,  reorganization,
          arrangement,  readjustment  of  debt,  moratorium  or  similar  law or
          statute;

     (3)  a proceeding  shall be commenced  against Maker under any  bankruptcy,
          reorganization,  arrangement,  readjustment  of  debt,  moratorium  or
          similar  law or  statute  and  relief is  ordered  against  it, or the
          proceeding is controverted but is not dismissed within sixty (60) days
          after the commencement thereof;

     (4)  Maker consents to or suffers the appointment of a receiver, trustee or
          custodian for any  substantial  part of its assets that is not vacated
          within thirty (30) days; or

     (5)  An Event of Default as defined in the Security  Agreement or any other
          obligation   of  Maker  or  MegaMedia   Networks,   Inc.,  a  Delaware
          corporation to the Holder.

     If an Event of Default occurs,  then and in every such case, the Holder may
declare the entire  unpaid  principal  balance of this Note,  together  with all
accrued  interest,  to be due and payable  immediately by a notice in writing to
the Maker  (except in the case of a default  under  paragraph 1 under  "Event of
Default" above, in which case no additional  notice shall be required other than
the  notice  specified  in  paragraph  1),  and upon any such  declaration  such
principal shall become immediately due and payable.

     In no event shall the amount of  interest  due or payments in the nature of
interest payable  hereunder exceed the maximum contract rate of interest allowed
by  applicable  law,  and in the event any such  payment is paid by the Maker or
received by the  Holder,  then such excess sum shall be credited as a payment of
principal,  unless the Maker shall notify the Holder, in writing, that the Maker
elects to have such excess sum returned to it forthwith.

     This Note may be prepaid in whole or in part at any time without penalty.

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     All notices, demands, requests or other communications ("Notices") required
or  permitted  to be given or made under this Note shall be in writing and shall
be personally delivered or sent by certified mail, return receipt requested,  to
the address of the party to whom such  Notices are to be given as stated in this
Note or as  subsequently  designated in writing in accordance  with the terms of
this  paragraph.  All  Notices  shall be deemed  to have been  given on the date
personally  delivered or, if mailed,  on the date received or three (3) business
days after the date of mailing, whichever is earlier.

     Maker hereby agrees to pay all costs of Holder in enforcing Holder's rights
hereunder,  including without limitation,  all reasonable attorneys' fees, costs
and costs of  appeal,  and hourly  fees of legal  assistants  working  under the
supervision of an attorney.

     This Note shall be governed by and construed in accordance with the laws of
the  State of  Florida.  No  requirement  of this Note may be waived at any time
except by written  instrument  signed by the party  against  whom such waiver is
sought to be enforced, nor shall any waiver be deemed a waiver of any subsequent
breach or default.  No failure to act or any delay by Holder in enforcing any of
its rights under this Note shall constitute a waiver of its rights and remedies.

     The Maker,  for itself,  its successors  and assigns,  hereby (a) expressly
waives presentment,  demand for payment, notice of dishonor,  protest, notice of
non-payment or protest, and diligence in collection;  (b) consents that the time
of all  payments or any part  thereof may be  extended,  rearranged,  renewed or
postponed by the Holder hereof;  (c) agrees that the Holder, in order to enforce
payment of this Note,  shall not be required  first to institute  any suit or to
exhaust any of its remedies against the undersigned.

                              Conversion Provisions

     A.   Subject to the other  provisions of this Note, the holder of this Note
          is entitled, at its option, to convert at any time all or a portion of
          the then  principal  amount  and  accrued  interest  of this Note into
          shares  of Common  Stock of Mega  Media  Networks,  Inc.,  a  Delaware
          corporation  (Mega Media  hereafter)  at a  conversion  price for each
          share of Common Stock (the "Conversion  Price") equal to Three Dollars
          ($3.00) per share.

     B.   Conversion  shall be  effectuated  by  surrendering  the Note to Maker
          and/or Mega Media be with a conversion  notice  executed by the holder
          of the Note evidencing such Holder's intention to convert this Note or
          a specified  portion (as above provided) hereof,  and accompanied,  if
          required  by Mega  Media,  by proper  assignment  hereof in blank.  No
          fraction of Shares or scrip  representing  fractions of shares will be
          issued on  conversion,  but the  number of  shares  issuable  shall be
          rounded  to the  nearest  whole  share.  The date on which  notice  of
          conversion is given (the "Conversion  Date") shall be deemed to be the
          date on which the Holder has delivered  this Note with the  conversion
          notice  duly  executed  to Mega  Media or,  the date set forth in such
          facsimile delivery of the notice of conversion if the Note is received
          by Mega Media within three (3) business days there from.  Certificates
          representing  Common Stock upon  conversion  will be delivered  within
          three (3) business days from receipt of the conversion notice. If less

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          than all of the outstanding  principal balance and accrued interest is
          converted,  an  amended  note  for the  unconverted  balance  shall be
          exchanged for this Note.

     C.   If the Company at any time pays to the  holders of its common  stock a
          dividend  in common  stock,  the  number  of  shares  of common  stock
          issuable  upon the  conversion  of this Note  shall be  proportionally
          increased,  effective  at the close of business on the record date for
          determination  of the  holders of the  common  stock  entitled  to the
          dividend.

     If the  Company at any time  subdivides  or combines in a larger or smaller
number of shares  its  outstanding  shares of common  stock,  then the number of
shares  of common  stock  issuable  upon the  conversion  of this Note  shall be
proportionally  increased in the case of a subdivision and decreased in the case
of a combination,  effective in either case at the close of business on the date
that the subdivision or combination becomes effective.

     If the Company is recapitalized, consolidated with or merged into any other
corporation,  or sells or conveys to any other  corporation all or substantially
all of its property as an entity,  provision  shall be made as part of the terms
of the recapitalization,  consolidation, merger, sale, or conveyance so that the
holder  or  holders  of this  Note  may  receive,  in lieu of the  common  stock
otherwise issuable to them upon conversion hereof, at the same conversion ratio,
the same kind and amount of  securities or assets as may be  distributable  upon
the recapitalization, consolidation, merger, sale, or conveyance with respect to
the common stock.

     D.   The shares of stock of Mega Media subject to the conversion  rights of
          Holder herein shall be subject to the registration rights contained in
          the Agreement.

     IN WITNESS  WHEREOF,  the Maker has caused this Note to be duly executed as
of the date set forth above.

                                           TITAN HOSTING, INC.,
                                           a Delaware corporation

                                   By:

                                   Print Name:________________________________

                                   Its:

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<PAGE>

     Mega Media  Networks,  Inc., a Delaware  corporation is executing this Note
for the purpose of agreeing to the Conversion Provisions.

                                                     MEGA MEDIA NETWORKS, INC.,
                                                     a Delaware corporation

                                   By:

                                   Print Name:

                                   Its:

                                        5SECURITY AGREEMENT

     THIS SECURITY  AGREEMENT  ("Security  Agreement")  is made this 14th day of
April,  2000,  by and  between  TITAN  HOSTING,  INC.,  a  Delaware  corporation
("Debtor"),  having  its  principal  place of  business  located  at57 West Pine
Street,  Orlando,  FL 32801,  and CITY-GUIDE  ISP,  INC., a Florida  corporation
("Secured  Party"),  having its principal  place of business  located at412 East
Madison Street, Suite 1000, Tampa, FL 33602.

                              W I T N E S S E T H:

     WHEREAS,  Debtor  wishes to grant  Secured  Party a  security  interest  in
certain  assets,  including  without  limitation,  all contracts,  equipment and
accounts  specified  on Exhibit A attached  hereto,  save and except the dial-up
accounts  Secured Party sold to Debtor  collectively,  "Collateral"),  to secure
payment of that certain  Promissory  Note of even date  herewith in the original
principal   amount  of  Seven  Hundred   Twenty   Thousand  and  00/100  Dollars
($720,000.00) ("Note"); and

     WHEREAS,  Secured  Party  wishes to  receive  a  security  interest  in the
Collateral to secure payment of the Note.

     NOW,  THEREFORE,  in consideration of the mutual covenants contained herein
and other good and valuable consideration,  the sufficiency and receipt of which
are hereby acknowledged, the parties agree as follows:

     1.   Recitals. The above recitals are true and correct and are incorporated
          herein by reference.

     2.   Grant of  Security.  Debtor  hereby  grants  Secured  Party a security
          interest in all of Debtors  right,  title and  interest in and to the
          Collateral  as  described  in Exhibit A attached  hereto,  whether now
          owned or hereafter  acquired,  or in which Debtor now has or hereafter
          acquires rights,  and wherever located and all proceeds,  as such term
          is  defined  in  Section  9-306(1)  of the UCC,  of any and all of the
          foregoing,  including, without limitation, (i) any and all proceeds of
          any insurance,  indemnity,  warranty or guaranty payable to the Debtor
          from time to time with respect to any of the Collateral;  (ii) any and
          all payments,  in any form whatsoever,  made or due and payable to the
          Debtor  from  time  to  time  in  connection  with  any   requisition,
          confiscation,  condemnation,  seizure or forfeiture of all or any part
          of the  collateral  by any  governmental  body,  authority,  bureau or
          agency (or any person acting under color of  governmental  authority);
          and (iii) any and all other  amounts from time to time paid or payable
          under or in connection with any of the Collateral.

     3.   Covenants.  Debtor  and Mega  Media  covenant  and agree  that,  until
          payment in full of the indebtedness evidenced by the Note, they will:

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<PAGE>

               (a)  not sell,  assign or  otherwise  dispose  of the  Collateral
                    except in the ordinary course of business;

               (b)  do or cause to be done all things  necessary to preserve and
                    keep in full force and effect their corporate  existence and
                    all rights and  privileges  necessary for the proper conduct
                    of its  business,  and comply with all  requirements  of all
                    applicable laws and all rules, regulations and orders of all
                    regulatory agencies and authorities having jurisdiction over
                    them;

               (c)  strictly  perform and observe  all  agreements,  warranties,
                    covenants and conditions of this Security Agreement;

               (d)  not  further  encumber  the  Collateral  without the express
                    written consent of the Secured Party;

               (e)  keep the Collateral fully insured, where applicable;

               (f)  not do anything to impair the value of the Collateral; and

               (g)  pay  all  taxes,  where  applicable,  with  respect  to  the
                    Collateral when due.

     4.   Inspection  of Records.  Debtor  shall  permit  Secured  Party and its
          agents to inspect,  examine,  and make  extracts or copies of Debtor's
          financial  records  at all  reasonable  times  with  prior  reasonable
          advance  notice.  Debtor shall furnish to Secured Party and its agents
          any  additional  information  Secured  Party may  reasonably  request.
          Debtor shall cooperate with Secured Party and its agents and honor all
          reasonable  requests of Secured  Party and its agents in effecting the
          inspection described above.

     5.   Cooperation.  Debtor shall, at its expense,  execute all documents and
          do all such  other  acts as Secured  Party may  reasonably  request in
          order to perfect Secured Party's security interest  hereunder.  Debtor
          shall  be  responsible  for  payment  of the  filing  fees  for  UCC-1
          financing   statements.   Secured   Party  shall  file  a  Form  UCC-3
          termination statement upon full payment of the Note.

     6.   Representations  and Warranties.  Debtor  represents and warrants that
          (i) the  execution,  delivery  and  performance  of the  Note and this
          Security   Agreement  have  been  duly  authorized  by  all  necessary
          corporate  actions  of  Debtor;  (ii)Debtor  is the sole  owner of the
          Collateral;  (iii)Debtor  has full power and authority to execute this
          Agreement;  (iv) the  collateral  is free  and  clear  from any  lien,
          encumbrance  or security  interest of any kind except for the security
          interest granted or permitted  hereunder or as otherwise  disclosed to
          Secured Party by Debtor; (v) it Debtor shall not transfer or otherwise
          dispose of the  Collateral  except in the ordinary  course of Debtor's
          business; and (vi) it Debtor shall not do anything to impair the value
          of the Collateral or the security interest granted hereunder.

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<PAGE>

     7.   Events of Default.  The term  "Event of Default" as used herein  shall
          mean  the  occurrence  and  continuation  of any  one or  more  of the
          following events:

          (a)  A default which  entitles the Secured Party to accelerate  all or
               any portion of the principal and interest  payments due under the
               terms of the Note;

          (b)  Failure of Debtor to promptly  and  faithfully  pay,  observe and
               perform  when  due  any of the  obligations  set  forth  in  this
               Agreement,  which  failure  continues  for ten  (10)  days  after
               receipt of written notice thereof from Secured Party;

          (c)  If Debtor shall:

               (i). file  a  petition  in  bankruptcy  or  a  petition  to  take
                    advantage of any insolvency act;

               (ii).make an assignment of any of the  Collateral for the benefit
                    of its creditors;

               (iii). consent to the appointment of a receiver for itself or for
                    the whole or substantially all of the Collateral;

               (iv).be  adjudicated  a  bankrupt   pursuant  to  a  petition  in
                    bankruptcy filed against it;

               (v). file  a  petition  or  answer  seeking   reorganization   or
                    arrangement  or other aid or relief under any  bankruptcy or
                    insolvency  laws or any other law for the relief of debtors;
                    or

               (vi).shall  have a final  judgment  entered,  or upheld  upon any
                    appeal,   against  Debtor  in  excess  of  $25,000.00  which
                    judgment remains  unsatisfied for more than thirty (30) days
                    after final adjudication.

          (d)  If a court  of  competent  jurisdiction  shall  enter  an  order,
               judgment or decree  appointing,  without the consent of Debtor, a
               receiver for Debtor or a substantial  part of the Collateral,  or
               approving a petition filed against Debtor seeking  reorganization
               or arrangement of Debtor under any bankruptcy or insolvency  laws
               or any  other  law for the  relief  of  Debtor,  and such  order,
               judgment  or decree  shall not be  vacated or set aside or stayed
               within sixty (60) days following the date of entry thereof; or

          (e)  If under the provisions of any law for the relief of debtors, any
               court of competent  jurisdiction  shall assume custody or control
               of Debtor or of the whole or a substantial part of the Collateral
               without  the consent of Debtor,  and any such  custody or control
               shall  not  be  terminated  or  stayed  within  sixty  (60)  days
               following the date of assumption or such custody or control.

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<PAGE>

8.   Remedies.  Upon  an  Event  of  Default,  Secured  Party  may  declare  any
     outstanding  indebtedness under the Note to be immediately due and payable.
     Secured Party may take immediate  possession of the Collateral,  and Debtor
     and Mega Media hereby grants Secured Party an irrevocable  license to enter
     upon the premises of Debtor or Mega Media to take  possession of any of the
     Collateral.  Additionally,  Secured  Party shall have  available  to it all
     other rights and remedies at law,  including the Uniform Commercial Code as
     adopted in the State of Florida, or in equity.

9.   Waivers.  Debtor expressly (i) waives notice of default; (ii) consents that
     the time for all payments  under the Note may be extended by Secured  Party
     and further consent that the Collateral or any part thereof may be released
     by  Secured  Party  without  in any  way  modifying,  altering,  releasing,
     affecting or limiting the liability of Debtor or any guarantor.

10.  Attorneys' Fees.  Debtor hereby agrees to pay all costs of Secured Party in
     enforcing Secured Party's rights hereunder,  including without  limitation,
     all reasonable  attorneys' fees, costs and costs of appeal, and hourly fees
     of legal assistants working under the supervision of an attorney.

11.  Miscellaneous.

     (a)  This Agreement  shall be construed in accordance  with the laws of the
          State of Florida.

     (b)  This Agreement contains the entire agreement and understanding between
          the  parties  and no  modification  hereof  shall be valid  unless  in
          writing and signed by the parties.

                              (INTENTIONALLY BLANK)

     (c)  This  Agreement  shall be binding upon and inure to the benefit of the
          parties and their respective heirs, successors and assigns.

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<PAGE>

       IN WITNESS WHEREOF, the parties have hereunto caused this Agreement to be
executed as of the day and year first above written.

SECURED PARTY:

CITY-GUIDE ISP, INC.
a Florida corporation

By:

Print Name: DAVID MARSHLACK

Its: PRESIDENT

DEBTOR:

TITAN HOSTING, INC.,
a Delaware corporation

By:

Print Name:STEPHEN H. NOBLE, III
A/K/A STEVE NOBLE AND
STEVEN NOBLE

Its: VICE PRESIDENT

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