I am interested in blocking translation services from accessing my site, such as Google Translate and Yahoo Babelfish.

Google's translation tool adheres to a nice meta tag, so that's taken care of, but Yahoo doesn't appear to do so. The way they work is akin to a proxy, using the IP address of the user, and they don't use a standard referrer, so I can't do a referrer or IP block.

Any ideas? Thanks in advance!