New Search Engine “iAsk” incorporates web search, news search, local search, image search, knowledge search and other various search functionalities

　　Shanghai, China – June 30, 2005—SINA Corporation (Nasdaq: SINA), a leading online media company and value-added information service provider for China and for global Chinese communities, today announced that it has launched its self-developed algorithmic search engine, “iAsk”. After one year of intensive self-development, iAsk represents a break through in online search technology by combining the conventional web search algorithm method with SINA’s own differentiated indexing technology. Leveraging SINA’s existing diverse portfolio of online portal and mobile resources, iAsk intends to provide Chinese Netizens with the most comprehensive and relevant search results.

　　iAsk, offers knowledge-based and community-based search in addition to the standard web-based search. While maintaining the power of traditional algorithm technology, SINA iAsk offers an added bonus of users’ interactivity with a unique Q&A platform. iAsk categorizes search subjects into areas of news, pictures, music, knowledge, and video and allows users to input key words and questions of their interests. iAsk then ranks sites partly by subject-specific popularity, clusters results into subject groups, and lists related link collections by experts. SINA iAsk also features an “express zone” that filters all past information and data collected by SINA on the subject being searched. In addition, SINA iAsk offers personalized features such as search by local content (maps, entertainment and travel) and archival of personal favorites. iAsk is designed to work with both the Chinese and English language queries.

　　“As China’s largest online portal, we are well positioned to become the dominant player in the online search market in China,” said Wang Yan, CEO of SINA, “We have one of the largest online traffic and ‘stickiest’ online users in China. Combined with those are our vast online and mobile resources. I am confident that the introduction of iAsk will go a long way towards enhancing the online community experience of our users and cementing our online media leadership in China.”

　　About SINA

　　SINA Corporation (Nasdaq: SINA) is a leading online media company and value-added information service (VAS) provider for China and for global Chinese communities. With a branded network of localized web sites targeting Greater China and overseas Chinese, SINA provides services through five major business lines including SINA.com (online news and content), SINA Mobile (mobile value-added services), SINA Online (community-based services and games), SINA.net (search and enterprise services) and SINA E-Commerce (online shopping and auctions). Together these units provide an array of services, which include regional focused online portals, mobile value-added services, search and directory, interest-based and community-building channels, free and premium email, online games, virtual ISP, classified listings, fee-based services, e-commerce, and enterprise e-solutions.

　　Safe Harbor Statement

　　This announcement contains forward-looking statements. SINA may also make written or oral forward-looking statements in its periodic reports to the Securities and Exchange Commission on forms 10-K, 10-Q, 8-K, etc., in its annual report to shareholders, in its proxy statements, in its offering circulars and prospectuses, in press releases and other written materials and in oral statements made by its officers, directors or employees to third parties. SINA assumes no obligation to update the forward-looking statements in this release and elsewhere. Statements that are not historical facts, including statements about the Company’s beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statement. Potential risks and uncertainties include, but are not limited to, SINA's historical losses, its limited operating history, the uncertain regulatory landscape in the People's Republic of China, the effect of the notice issued by SARFT in late January 2005 on the Company's revenues from usage-based SMS products promoted via direct advertisement on radio and television, the Company's ability to develop and market other usage-based SMS products, fluctuations in quarterly operating results, the Company's reliance on mobile value-added service and online advertising sales for a majority of its revenues, the Company's reliance on mobile operators in China to provide mobile value-added service, the changes in January 2005 by China Mobile to its billing process for undelivered MMS services and the effect of such changes on the Company's MMS revenues, the migration by China Mobile of MMS onto MISC platform and the effect of such migration on the Company's MMS revenues, any failure to successfully develop and introduce new products and any failure to successfully integrate acquired businesses. Further information regarding these and other risks is included in SINA's Annual Report on Form 10-K for the year ended December 31, 2004 and its recent reports on Form 10-Q as well as in its other filings with the Securities and Exchange Commission.