Document:

EXHIBIT
      4.1

    

    THE
      ISSUANCE AND SALE OF THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
      ACT
      OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS.  THE SECURITIES
      MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF
      (I)
      AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES
      ACT
      OF 1933, AS AMENDED, OR (II) AN OPINION OF COUNSEL, IN A FORM REASONABLY
      ACCEPTABLE TO THE LENDER, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT.
      

    

    

    Secured
      Bridge Loan Promissory Note

    

    
      	
              $630,000

            	
              July
                14, 2008

            

    

    

    FOR
      VALUE
      RECEIVED, SINGLE TOUCH INTERACTIVE, INC., a Nevada corporation (hereinafter
      called the “Borrower”), hereby promises to pay to the order of SINGLE TOUCH
      SYSTEMS INC., a Delaware corporation (hereinafter called the “Lender”), 32
      Poplar Place, Fanwood, New Jersey 07023, the principal sum of Six Hundred Thirty
      Thousand Dollars ($630,000) (the “Loan”), in lawful money of the United States
      of America and in immediately available funds. 

    

    1. The
      outstanding principal balance of this Note, together with accrued and unpaid
      interest thereon, shall be due and payable on July 31, 2008 (the “Due Date”),
      which Due Date may be extended by the Borrower and the Lender in writing;
provided,
      however,
      that
      upon the consummation of a merger between the Borrower and the Lender, or an
      affiliate of the Lender (the “Merger”), all
      indebtedness evidenced hereby shall be deemed canceled and paid in
      full.

    

    2. This
      Note
      shall bear interest at the rate of twelve percent (12%) per annum on the unpaid
      principal balance hereof. Interest shall be calculated on the basis of a year
      of
      three hundred sixty (360) days applied to the actual days on which there exists
      an unpaid balance under this Note.

    

    3. Upon
      an
“Event of Default,” as defined in the Bridge Loan Agreement described below, the
      rate of interest accruing on the unpaid principal balance of this Note shall
      increase to eighteen percent (18%) per annum. Such default interest rate shall
      continue until all defaults are cured.

    

    4. This
      Note
      is subject to the terms of a Bridge Loan Agreement, as amended (the “Bridge Loan
      Agreement”) dated March 31, 2008 by and among the Borrower and the Lender. All
      capitalized and undefined terms herein shall have the meaning given them in
      the
      Bridge Loan Agreement. 

    

    5. Upon
      the
      occurrence of an Event of Default (including the passage of applicable cure
      periods) under the Bridge Loan Agreement, the entire principal amount
      outstanding hereunder and all accrued interest hereon, together with all other
      sums due hereunder, shall, as provided in the Bridge Loan Agreement, become
      immediately due and payable.

    

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    Notwithstanding
      the foregoing, if an Event of Default is waived by the Lender, the Borrower
      shall use its reasonable best efforts to ensure that the Merger and the
      Transactions are consummated.

    

    6. In
      addition to the rights and remedies given it by this Note, the Lender shall
      have
      all those rights and remedies under the Security Agreement dated March 31,
      2008
      between the Lender and the Borrower as well as those allowed by applicable
      laws.
      The rights and remedies of the Lender are cumulative and recourse to one or
      more
      right or remedy shall not constitute a waiver of the others. The Borrower shall
      be liable for all commercially reasonable costs, expenses and attorneys’ fees
      incurred by the Lender in connection with the collection of the indebtedness
      evidenced by the Note. 

    

    7. To
      the
      extent permitted by applicable law, the Borrower waives all rights and benefits
      of any statute of limitations, moratorium, reinstatement, marshalling,
      forbearance, valuation, stay, extension, redemption, appraisement and exemption
      now provided or which may hereafter by provided by law, both as to itself and
      as
      to all of its properties, real and personal, against the enforcement and
      collection of the indebtedness evidenced hereby. 

    

    8. All
      notices, requests, demands, and other communications with respect hereto shall
      be in writing and shall be delivered by hand, sent prepaid by a
      nationally-recognized overnight courier service or sent by the United States,
      certified, postage prepaid, return receipt requested, at the addresses
      designated in the Bridge Loan Agreement or such other address as the parties
      may
      designate to each other in writing. 

    

    9. This
      Note
      or any provision hereof may be waived, changed, modified or discharged only
      by
      agreement in writing signed by the Borrower and the Lender. The Borrower may
      not
      assign or transfer its obligation hereunder without the prior written consent
      of
      the Lender. 

    

    10. The
      term
“the Borrower” shall include each person and entity now or hereafter liable
      hereunder, whether as maker, successor, assignee or endorsee, each of whom
      shall
      be jointly, severally and primarily liable for all of the obligations set forth
      herein. 

    

    11. If
      any
      provision of this Note shall for any reason be held invalid or unenforceable,
      such invalidity or unenforceability shall not affect any other provision of
      this
      Note, but this Note shall be construed as if this Note had never contained
      the
      invalid or unenforceable provision. 

    

    12. This
      Note
      shall be governed by and construed in accordance with the domestic laws of
      the
      State of New York, without giving effect to any choice of law provision or
      rule.
      Any controversy or dispute arising out of or relating to this Note shall be
      settled solely and exclusively in accordance with the provisions of the Bridge
      Loan Agreement and Security Agreement, which provisions are incorporated by
      reference herein as though fully set forth. 

    

    

    [Remainder
      of Page Intentionally Left Blank]

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    IN
      WITNESS WHEREOF, the undersigned Borrower has caused the due execution of this
      Bridge Loan Promissory Note as of the day and year first herein above written.
      

    

    

    SINGLE
      TOUCH INTERACTIVE, INC.

    

    

    

    By: /s/
      Anthony Macaluso   

    Name: Anthony
      Macaluso

    Title: Chief
      Executive OfficerEXHIBIT
      10.1

    

    THIRD
      ADDENDUM TO AGREEMENT AND PLAN OF MERGER AND REORGANIZATION DATED MARCH 20,
      2008
      AMONG SINGLE TOUCH SYSTEMS INC. (FORMERLY KNOWN AS HOSTING SITE NETWORK, INC.),
      SINGLE TOUCH ACQUISITION CORP. AND SINGLE TOUCH INTERACTIVE,
      INC.

    

    This
      Addendum is made and entered into as of the 27th
      day of
      June 2008. Unless otherwise defined herein, capitalized terms used in this
      Addendum shall have the meaning given to them as in the Agreement and Plan
      of
      Merger and Reorganization.

    

    NOW,
      THEREFORE, in consideration of the respective covenants contained herein and
      intending to be legally bound hereby, the Parties hereto agree as
      follows:

    

    1. Section
      8.2 of the Agreement and Plan of Merger and Reorganization is amended to read
      as
      follows:

    

    “8.2. TERMINATION
      FOR FAILURE TO CLOSE.

    

    This
      Agreement shall be automatically terminated if the Closing Date shall not have
      occurred by July 31, 2008, unless extended in writing by mutual agreement of
      both the Parent and the Company”.

    

    2. All
      other
      terms of the Agreement and Plan of Merger and Reorganization shall continue
      with
      full force and effect.

    

    3. This
      Addendum may be executed in any number of counterparts, each of which shall
      be
      deemed to be an original, but all of which taken together shall constitute
      one
      and the same agreement.

    

    IN
      WITNESS WHEREOF, this Addendum has been executed by the Parties as of the date
      first above written:

    

    
      	
              PARENT:

            	 
	
              SINGLE
                TOUCH SYSTEMS INC.

            	 
	 	 
	
              By: /s/
                Scott Vicari   

            	 
	
              Name: Scott
                Vicari

            	 
	
              Title: President

               

            	 
	 	 
	
              ACQUISITION
                SUBSIDIARY:

            	
              COMPANY:

            
	
              SINGLE
                TOUCH ACQUISITION CORP.

            	
              SINGLE
                TOUCH INTERACTIVE, INC.

            
	 	 
	
              By:  /s/
                Scott Vicari   

            	
              By:  /s/
                Anthony Macaluso  

            
	
              Name: Scott
                Vicari

            	
              Name: Anthony
                Macaluso

            
	
              Title: President

               

            	
              Title: Chief
                Executive OfficerEXHIBIT
      10.2

    

    SECOND
      ADDENDUM TO BRIDGE LOAN AGREEMENT DATED MARCH 31, 2008 BETWEEN SINGLE TOUCH
      SYSTEMS INC. (FKA HOSTING SITE NETWORK, INC.) AND SINGLE TOUCH INTERACTIVE,
      INC.

    

    This
      Addendum is made and entered into as of the 27th
      day of
      June 2008. Unless otherwise defined herein, capitalized terms used in this
      Addendum shall have the meaning given to them as in the Bridge Loan
      Agreement.

    

    NOW,
      THEREFORE, in consideration of the respective covenants contained herein and
      intending to be legally bound hereby, the Parties hereto agree as
      follows:

    

    1. The
      first
      WHEREAS clause of the Bridge Loan Agreement is amended to read as
      follows:

    

    “WHEREAS,
      Lender and Borrower have agreed upon certain of the terms and conditions of
      a
      merger (the “Merger”) and related transactions (collectively, the
“Transactions”) which is expected to be completed and closed upon no later than
      July 31, 2008 (the “Completion Date”);” 

    

    2. All
      other
      terms of the Bridge Loan Agreement shall continue with full force and
      effect.

    

    3. This
      Addendum may be executed in any number of counterparts, each of which shall
      be
      deemed to be an original, but all of which taken together shall constitute
      one
      and the same agreement.

    

    IN
      WITNESS WHEREOF, this Addendum has been executed by the Parties as of the date
      first above written:

    

    
      	
              SINGLE
                TOUCH INTERACTIVE, INC.

            
	 
	
              By:  /s/
                Anthony Macaluso   

            
	
              Name: Anthony
                Macaluso

            
	
              Title: Chief
                Executive Officer

            
	 
	 
	
              SINGLE
                TOUCH SYSTEMS INC.

              (FKA
                HOSTING SITE NETWORK, INC.).

            
	 
	
              By:  /s/
                Scott Vicari    

            
	
              Name: Scott
                Vicari

            
	
              Title: President

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