Exhibit 99.3 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Amendment No....Joint Filing Agreement • February 12th, 2007 • Sina Corp • Services-prepackaged software
In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Amendment No. 2 to Schedule 13D referred to below) on behalf of each of them of a statement on Amendment No. 2 to Schedule 13D (including amendments thereto) with respect to the Ordinary Shares, par value $0.133, of SINA Corporation and that this Agreement be included as an exhibit to such joint filing. This Agreement may be executed in any number of counterparts all of which, taken together, shall constitute one and the same instrument.
