Document:

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                                                                   EXHIBIT 10.79

    Equity Pledge Agreement-Participation Letter of Shanghai Jiefang Focus Media

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                             EQUITY PLEDGE AGREEMENT

SHANGHAI FOCUS MEDIA ADVERTISEMENT CO., LTD., (registered address: Room 1003 F,
No.1027, Changning Road, Changning District, Shanghai) (hereinafter the
"PARTICIPATED PLEDGOR"), and SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT CO.,
LTD. (hereinafter the "PARTICIPATED TARGET COMPANY"), hereby agree to
participate in Equity Pledge Agreement dated on March 28, 2005 between Focus
Media Technology (Shanghai) Co., Ltd. (hereinafter "FOCUS MEDIA TECHNOLOGY"),
Focus Media Digital Information Technology (Shanghai) Co, Ltd.
(hereinafter"FOCUS MEDIA DIGITAL"), Shanghai Focus Media Advertisement Co., Ltd.
and other relevant parties (hereinafter the "EQUITY PLEDGE AGREEMENT") as an
independent contract party. The Participated Pledgor and the Participated Target
Company hereby agree to pledge the equity of the Participated Target Company
which constitutes 60% of the registered capital of the Participated Target
Company to Focus Media Technology as of the date of this Acknowledgement Letter
to secure the following contractual obligations:

1.   Contractual Obligation for the Participated Pledgor:

(a)  Contractual Obligation under the Call Option Agreement among Focus Media
     Technology and other relevant parties dated March 28 2005 (hereinafter the
     "CALL OPTION AGREEMENT") participated by the Pledgor pursuant to the
     Acknowledge Letter executed by the Participated Pledgor on the date May 22,
     2006; and

(b)  Contractual Obligation under the Shareholder's Voting Rights Proxy
     Agreement among Focus Media Technology and other relevant parties dated
     March 28 2005 (hereinafter the "PROXY AGREEMENT") participated by the
     Pledgor pursuant to the Acknowledge Letter executed by the Participated
     Pledgor on the date May 22, 2006.

<PAGE>

    Equity Pledge Agreement-Participation Letter of Shanghai Jiefang Focus Media

2.   Contractual Obligation for the Participated Target Company:

(a)  Contractual Obligation under the Call Option Agreement participated by the
     Target Company pursuant to the Acknowledge Letter executed by the
     Participated Target Company on the date May 22, 2006; and

(b)  Contractual Obligation under the Proxy Agreement participated by the Target
     Company pursuant to the Acknowledge Letter executed by the Participated
     Target Company on the date May 22, 2006.

This Acknowledgement Letter once executed by the Participated Pledgor and
Participated Target Company, the Participated Pledgor and the Participated
Target Company shall make the same undertakings and warranties with those of
Pledgors and Target Companies under the Equity Pledge Agreement (to the extent
that is related and applicable to Participating Shareholder and Participated
Target Company), agree to perform the obligations of Pledgors and Target
Companies stipulated in the Equity Pledge Agreement (to the extent that is
related and applicable to Participating Shareholder and Participated Target
Company), and admit the rights and obligations of Parties under the Equity
Pledge Agreement.

                   [THE REMAINDER OF THIS PAGE IS LEFT BLANK]

<PAGE>

    Equity Pledge Agreement-Participation Letter of Shanghai Jiefang Focus Media

                                [EXECUTION PAGE]

SHANGHAI FOCUS MEDIA ADVERISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA DIGITAL INFORMATION TECHNOLOGY (SHANGHAI) CO, LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006<PAGE>
                                                                   EXHIBIT 10.80

      Call Option Agreement-Participation Letter of Shanghai Jiefang Focus Media

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                              CALL OPTION AGREEMENT

SHANGHAI FOCUS MEDIA ADVERTISEMENT CO., LTD., (registered address: Room 1003 F,
No.1027, Changning Road, Changning District, Shanghai) (hereinafter the
"PARTICIPATING SHAREHOLDER"), and SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT
CO., LTD. (hereinafter the "NEW TARGET COMPANY"), as independent party, hereby
agree to participate in the Shareholders' Voting Rights Call Option Agreement
among Focus Media Technology (Shanghai) Co., Ltd. (hereinafter "FOCUS MEDIA
TECHNOLOGY"), Shanghai Focus Media Advertisement Co., Ltd. and other relevant
parties (hereinafter the "CALL OPTION AGREEMENT") dated March 28 2005. The
Participating Shareholder hereby grant Focus Media Technology with an
irrevocable equity Call Option (hereinafter "CALL OPTION") in respect to 60% of
the equity share of the New Target Company (hereinafter "NEWLY INCREASED EQUITY
SHARE") held by the Participating Shareholder. Once this Acknowledgement Letter
is executed by the Participating Shareholder and the New Target Company, the New
Target Company and the Newly Increased Equity Share shall be deemed to be the
"Target Company" and "Option Equity" defined under the Call Option Agreement,
and the Participating Shareholder and the New Target Company shall be deemed to
have made the same undertakings and warranties related to the New Target Company
and Option Equity with those of the Shareholders and Target Companies under the
Call Option Agreement have made related to "Target Company" and "Option Equity"
(to the extent that is related and applicable to the Participating Shareholder
and the Participated Target Company), and acknowledged and agreed to
respectively perform the same obligations in the Call Option Agreement (to the
extent that is related and applicable to the Participating Shareholder and the
Participated Target Company).

<PAGE>

      Call Option Agreement-Participation Letter of Shanghai Jiefang Focus Media

                                [EXECUTION PAGE]

SHANGHAI FOCUS MEDIA ADVERISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006<PAGE>
                                                                   EXHIBIT 10.81

                       Shareholder's Voting Rights Proxy Agreement-Participation
                                          Letter of Shanghai Jiefang Focus Media

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                   SHAREHOLDERS' VOTING RIGHTS PROXY AGREEMENT

SHANGHAI FOCUS MEDIA ADVERTISEMENT CO., LTD., (registered address: Room 1003 F,
No.1027, Changning Road, Changning District, Shanghai) (hereinafter the
"PARTICIPATING SHAREHOLDER"), and SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT
CO., LTD. (hereinafter the "PARTICIPATED TARGET COMPANY"), as independent party,
hereby agree to participate in the Shareholders' Voting Rights Proxy Agreement
among Focus Media Technology (Shanghai) Co., Ltd. (hereinafter "FOCUS MEDIA
TECHNOLOGY"), Shanghai Focus Media Advertisement Co., Ltd. and other relevant
parties (hereinafter the "PROXY AGREEMENT") dated March 28 2005. Participating
Shareholder and Participated Target Company agree to entrust the Trustees
designated by Focus Media Technology to exercise the voting rights in
Participated Target Company in respect of 60% of the equity interest in the
registered capital of Participated Target Company held by the Participating
Shareholder as of the date of this Acknowledgement Letter, on behalf of
Participating Shareholder.

Once this Acknowledgement Letter is executed by the Participating Shareholder
and Participated Target Company, Participating Shareholder and Participated
Target Company shall be deemed to have made the same undertakings and warranties
with those of the Shareholders and Target Companies under the Proxy Agreement
(to the extent that is related and applicable to Participating Shareholder and
Participated Target Company), agreed to respectively perform the obligations of
the Shareholders and Target Companies stipulated in the Proxy Agreement (to the
extent that is related and applicable to Participating Shareholder and
Participated Target Company), and acknowledged the rights and obligations of the
Parties under the Proxy Agreement.

<PAGE>

                       Shareholder's Voting Rights Proxy Agreement-Participation
                                          Letter of Shanghai Jiefang Focus Media

                                [EXECUTION PAGE]

SHANGHAI FOCUS MEDIA ADVERISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

SHANGHAI JIEFANG FOCUS MEDIA ADVERTISEMENT CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:    /s/ Jason Nanchun Jiang
              -----------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

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