You are mistaken, that site wasn't hacked. Forumotion has no exploits for a "hacker" to get in. The only way someone can do that to a site is if they have the password to an administrative account. Instead of pointing fingers at a normal regular user, I'd be looking to the management my friend. No matter how bad I piss somebody off here, I guarantee nobody will ever know my password on this forum. It's encrypted using a passphrase only I know, into a string of 128 hexidecimals....
Stupid young people these days try to start forums and use stupid passwords, then "think" they can trust somebody with it.