This looks like an interesting thread. I just discovered it so I'm many pages behind. I believe that insofar as Cindy has been able to "take down a few Myspace sites" (according to you) this would probably be simply based on the kindness and policy of Myspace itself,and not based on any legal right. I say "probably" because I cant be 100% sure without having read the supposedly objectionable pages.
Thus, for example, the owners of this Websleuths web site have the right to make this site as strict or as tolerant as they wish -- it's their site and that's all there is to it. However, if Websleuths were to allow the use of such words as *advertiser censored* or *advertiser censored* (or even worse) in connection with this case, the Anthonys would have a difficult time fighting this policy. It's free speech.