That clears up the earlier speculation [webmasterworld.com] of who would end up with Sogou's ~9% marketshare slice. Soso is a tiny property compared to the others, so their combined share still leaves them far behind Baidu and Qihoo...but that appears to have been TenCent's plan.
Actually the smaller players have been growing, particularly Qihoo. It's Baidu's market-share that is being eroded...slightly. The smaller competitors in the China market are quite feisty and tenacious.