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In case it hasn't quite dawned on everyone yet that the internet is a publicly available resource on which information you place about yourself may influence others' perceptions of you, job site Careerbuilder.com has surveyed employers about whether they check potential applicants' social networking profiles. It turns out 1 in 5 do (or at least admitted to it), and, surprise, often wind up junking resumes based on what they see, like stories of drinking or drugging, and "provocative or inappropriate photographs." But presumably all of the above puts you at an advantage for some jobs, like working for Eliot Spitzer or an Olsen.