My evil ex who may or may not have raped someone (and I'd absolutely believe that he did) has sent me a few e-mails, viewed my okcupid profile repeatedly.... He needs to STOP IT.

The e-mails stopped when I told him I'd report him to the ISP for harassment.
The furthest I will go is to read their LJ to see if they are still alive. I rarely do that. I certainly don't make any kind of contact unless it is an honest "I'd like us to attempt a friendship" message. I have done this a total of once.