So, regardless of whether you think I'm right or wrong....I receive CV's, I decide on which candidates I want to interview and then I look them up to see if and what internet presence they have.
BE WARNED.....if you use social networking sites, make your security settings as tight as a gnat's chuff, to stop potential employers like me researching you in advance and not liking what they find!
Also, warn the kids - universities are doing this more and more now.
As you were.