It looks like the index page for the forums has been hacked by some jokers named "Federal" and "DZ27", who give "Greets to all Muslim ".
Hooray for immature punks making a profound public statement by denouncing and impeding those who give their time and effort for free to help people learn.
A quick Google search show outlookforums.com has be hit as well, I'm guessing it's a vBulletin vulnerability, and they're gonna hit up as many vBulletin sites as possible.
I just sent an email to webmaster in case he doesn't know about it yet.