BMW has gone after AskJolene with the claim that they are violating BMW's trademark. Maybe they think because this is a porn site, they're going to stand a chance of winning, wheras if they made the same case against Google, they'd be laughed out of court (and Google can return more infringing pages than AskJolene).
Search Engine Webmasters have no responsibility for the content they index. Most of the indexing happens automatically anyway. Grr snark.