> I didn't read the fine print of Bing using it to augment its search engine, but that is definitely a very interesting case.

This might be going against the pro-business attitude of HN, but there's limits to what fine print can accomplish. You can't disclaim away defamation law, you have to convince a court that what you did wasn't defamatory for some articulable reason beyond "I say it isn't" or "I said I wasn't responsible" or some other stock phrase.