You can join by registering here:
http://triviasquares....x.cgi?action=register
The format is 30 questions, a mixture of pictures and music to try and reduce the chance of googling. Teammates confer with each other on the message board before making a post with their answers.
Ideally, you would be in with team 4 (lardhelmet, patchett and pussnboots) as they need one more member but you are welcome to either play by yourself or find a user or two to join you in making a new team.