I recommend any non-Chinese web site block the TaspaSider, from http://www.tasap.com. It does not request robots.txt, and requested 387 pages from one of my web sites in 74 seconds. The user agent was “Tasapspider/0.9 (http://www.tasap.com)” and the IP address was 218.28.29.234.
Update 2010-03-05: Also blocked 218.28.29.236.