this article on Perez Hilton of Stardoll!!! In it Dan explains that his account was deleted by Stardoll after a disagreement that he had with them via email about the anti-cyber bullying campaign, aka the BFF Code. He isn't very specific, but from what I read it sounds like one of his non-Superstar friends was being bullied by a Superstar member and nothing was being done about it, and he suspected (logically) that it was because the guilty party was paying to use the site and his friend wasn't. He expressed his frustrations, and his account was inactivated. Coincidence? Probably not. Honestly, I haven't been on Stardoll for very long but some of the things I've noticed are pretty shady. I wouldn't put this past them. Of course, I don't know the whole story, I barely know the story at all. And I don't really know Dan, but I'm sad to hear this happened to him. It makes me think of how many other members this may have happened to.
His username has even been removed from the messages I had from him in my Inbox (looks like he styled himself to look like the Joker, I'm disappointed I missed the whole get-up!!):