UPDATE Aug 2013: You can run contests in the timeline, but I still recommend using an app. ORIGINAL: You must administer all Facebook contests, promotions and sweepstakes using a third-party app, not the Facebook platform itself. In addition, you have to acknowledge that the contest is not sponsored, endorsed, administered by or associated with Facebook. You must have clear contest rules and you absolutely should collect name and email from entrants so you can contact the winner because you can't use Facebook messages for that either. Know the rules, enjoy your promotions.
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