dstiles - 10:26 pm on Dec 2, 2010 (gmt 0)
Our server is UK based with mostly either UK or COM domains.
I block Chinese bots such as baidu and yahoo whilst letting in their Japanese versions because one of my clients has Japanese customers and one of our own sites features well in Japan.
Can't read the Japanese baidu site (eg) but his site comes up in it, although ours seems not to. Both come up in Japanese yahoo. The sites do not feature in the Chinese baidu or yahoo SEs.
I think (although not proven) that blocking (eg) bing or google here would be a big mistake. :)