I also always look for my prospective dates on myspace. Of course on their myspace page they're not going to TELL you they're a murderer or anything. But you can find out a lot about people this way, like what kind of music they like, what are their friends like, etc. Also gives you a boost on conversation starters. (I don't tell them I researched them on myspace, i just might casually mention the band they like, or things like that)