I'm interested, but I want to get plenty of practise games under my belt before I join a campaign - my lack of games before Mike's attempt at trying one was what turned me off the whole thing.
That said, I won't even to be in a position to get practise games in till late July/August. And of course there's length of the game (which I honestly have no idea on) - if a game takes to long I'll need to stop to leave for work, which makes it pointless for me to join in (as does being able to play "friendlies", but that's a different issue).