Have you sorted out the legal issues with the name? Because I'd be wary about using something under a C&D with such a clear case.
Yes we have. Mr Poole "contacted" us: http://www.bbc.co.uk/news/technology-20408037
His lawyers sent you a C&D; you responded to that C&D and now you've launched.
Considering he's been known as moot since 2003, and is known by millions of people as moot, and has a strong link to online discussion forums, I'd think he has an excellent case.
Since, apart from his name, the primary meaning of moot is "closed to debate" (not "open to debate"; you're welcome to provide examples of "moot point" where the meaning is "open to debate" and not "closed to debate") it seems like a weird choice of name.