The Legal Liability of Keyword Metatags?

Nobody really debates too much about keyword metatags anymore. Google and MSN ignore them, Yahoo and Ask don't, but go stuffing them or you risk search engine penalties. But rarely does anybody bring up the legal liabilities of what's in your keyword tags.

But apparently, it does come up in court sometimes, after webmasters drop competitor trademarks into the tags, and the competitor cries infringement.

Now it's still quite up in the air whether even bidding on a competitor trademark for use in search advertising is infringement, though many cases recently have ruled that it is not. Google still allows that, but MSN and Yahoo do not.
Technology & Marketing Law Blog's
Irrelevance, as in, most of Internet's not going to see them anyway. But, as Goldman points out, a lot of judges may not understand that.