Where are you?

So he was definitely supposed to be back in town tonight, as he told me he was going to tutor tonight so that we could go out on Thursday. I really think I should have heard from him by now. I've started searching for him on Google, but his name is way too common to come up with any useful information. I've even searched his name in combination with words like, crash, accident, and obituary. Nothing. Ian seems to have just disappeared off the face of the Earth. Not only have I not heard from him, but he hasn't logged on to the dating site or AIM. How can someone go from 3-6 hours of IMs and multiple e-mails everyday to nothing at all?