In this article, Social Media Examiner explains the legalities behind contests and giveaways and breaks down specific requirements, such as what should be included in your official rules and when you need to collect additional information from the recipients of a prize.
Facebook recently changed their rules regarding running promotions on your page. Most notably, promotions
must now no longer need to be run through an app. Read the full guidelines for details. (updated 12/4/13)
Twitter contest guidelines are not all that restrictive, but you’ll want to glance over them before running any sort of promotion on your Twitter account to ensure that you (or your followers) don’t violate any rules by participating.
Have you run any social promotions? How did it go? I’d love to hear about your experience in the comments below.