As a job hunter, you should know that some Recruiters will research candidates online. Of course, it seems like everybody researches everything online these days. There are plenty of articles out there about creating and managing your online image or branding. Not just as a company, but as an individual. Like anything, this research needs to be kept in perspective and should not replace tried and true due diligence such as personal meetings, references checks, and customized screening. But knowing that someone might be looking you up on social and professional networking sites, you should at least make sure that simple searches on yourself will not cause alarm for a potential employer (Facebook and MySpace seem to be the greatest source of this.) Check out this poll showing where candidate research is performed most often.
Researching Candidates Online