This just feels wrong

Something I've heard a little bit about here and there, but since someone from the career center emailed this out to us, it feels real now. Basically, it's an article about how potential employers check out online social networking profiles and Google results to learn more about candidates for positions at their companies/organizations. I agree that it's foolish to post photos of yourself doing something sketchy or illegal on a public profile, but the fact of the matter is that people use these profiles as creative outlets and connections with friends, and how does anything on a profile relate to a person's professional capabilities? This is a little too much invasion of privacy, if you ask me. What if I were to post a musing or a link to my blog on my MySpace or Facebook or Friendster profile, and a potential employer read something that they personally disagree with but has nothing at all to do with the job I applied for? Can they not hire me because they don't like my poetic turn of phrase or because I'm holding a cup of beer in a posed and perfectly proper photo of me and a friend from a street fair? What if they read this posting and decide that because I feel this sort of thing is invasion of privacy, they don't want to hire me? That's the kind of discrimination that's the hardest to prove and it's so unfair. Thoughts?