Sina is the biggest vendor of china online advertising market, and advertising is his main income( 58%, 2006 Q3). According to china online advertising annual report 2006, Analysys International, Sina occupied 22.66% market share.

Affected by policy adjustment of mobile carriers, another important business, mobile VAS (account for 38.86% of total Sina revenue, 2006Q3) would become sluggish. So Sina put more forces on advertising business, increases spending and enlarge advertising scope, like online video advertising.

But as the growth point, online ads are affected by macro economic environment. I forecast 2007/08 the entire china economy speed will slow down, so online ads bubble will disrupted. Some facts from my TV station survey convinced my judgment, annual CCTV ads bidding is just one swindle. The data is true, but winner can not buy in it after bid, because advertisers have less and less budget. Fortunately I write these with English. Wish no one could find it.

So, my conclusion is that Sina is becoming older, this situation is his fate, his business model. His share price was controlled by macro-economy and government policy. Anyway, Sina will still be the biggest online ads player in2006/07.