More than ever, social media is being used by employers to determine who you really are and what you are really like outside of "the interview." While there are many horror stories detailing what NOT to do (don't post indiscreet pictures on Facebook, don't tweet about how well your interview is going while it is actually going on, etc.), there are ways to make social media work for you.
8 Ways to Meet Your Professional Goals Using Social Media has a list of recommended ways to boost your social profile the right way and kick start your legal career.
Ernster, the Virtual Library Cat
Above the Law - A Legal Tabloid - News, Gossip, and Colorful Commentary on Law Firms and the Legal Profession