QIHU has a 3B market cap whereas SOHU has a 1.5B market cap. Buyouts usually include around a 20-40% premium to the price, so it would seem BIDU would be eyeing SOHU over QIHU. SOHU's new search engine will include the google function where it offers suggestions to what you might be searching.. I love this goog function and SOHU looks to take 10-15% of search marketshare. I think paying around 4B for a QIHu buyout is too much for BIDU, but paying around a 2.0B for SOHU is doable.