I am not sure how I feel about the ethics of this possible response, but it occurred to me so I thought I would mention it-

Use xoxo against itself. Start slander threads against the sites owner. Get enough people to post on the threads / read them, so that they get very high google values. Perhaps then the owners of the site might get an idea of what it is like to be web-attacked.

As a plus, if they selectively edit, then they open themselves up to possible liability for selective moderation.