What Does Your Profile Photo Say To Potential Employers?

Right here in public, I will admit it: I am old enough to remember a time when Facebook and Twitter did not exist.

However, that does not mean I will post prehistoric pictures of myself on the web; I think it's as important to be as up-to-the-moment with my photo as I am in my status updates and tweets. I wouldn't post text that says "OMW to school. 6th period gym sux!", so why would I upload a picture of myself that's just as out of date?