In order to sell a company's stock short you must first find someone to loan you its shares. Borrowing shares like this costs money. Here is an article about the market for borrowed shares of Baidu.com. (Hat tip: Trader Mike)
Evidently, borrowing shares to short BIDU is very difficult and expensive. This tells me that there is a large contingent of traders who think shorting BIDU here is a sure road to riches. I am naturally suspicious of such widely held bearish views. I am sticking with my forcast that BIDU will hit 270 over the next 6-9 months.