Baidu has just added a function that allows people to use their mouse to write Chinese characters for searches.
On the Baidu home page, click on “??” (sh?uxi?/??/handwrite).
This will bring up a pop-up box in which you can use your mouse to write Hanzi. This functions in basically the same way as the mouse-writing tool that Nciku added about two years ago.
source: Baidu.com’s Search Box Now Supports Chinese Handwriting Input, China Tech News, June 16, 2010