If asked by an interviewer for a job position, would you show them your Facebook (or Myspace) profile? Based on unauthorized polling, counting comments on blogs on this etc., an over whelming number of people (less than 20% that actually have a profile, would actually offer up this site).
80 percent of companies use or are planning to use social networking to find and attract candidates this year.
More here from Guy Kawasaki on How to Go on the Offensive with Facebook