Quote Originally Posted by barbiegirl View Post
I totally agree on just ignoring them. If they don't get the attention they covet they will move somewhere else.

What about a sign up process where you have to authenticate new accounts via a text on a mobile phone? I don't know if that would be possible here but it would be a good way to keep the site free for the students who can't afford a membership fee/don't have a credit card but still auto-monitor new accounts. One account per mobile phone number type of deal.
This would work, Craigslist uses phone authentication to stop spammers.