I just tried to join as well. However I had a bit of a problem with the system. After I sent my credit card info it said it was rejected. I went back to verify that my info was correct (and it was) and resubmitted it. I did this twice, actually, and it still rejected it. On the third time it said a payment was already made. I'm in contact with the administration because I was never able to fill out the correct forms. I don't know if anyone else has had problems with it.
"It is good to have an end to journey toward; but it is the journey that matters, in the end."
--Ursula K. Le Guin
"Mental health is a commitment to reality at all times."
--M. Scott Peck