Rafflecopter allows you to customize and embed an entry form on your site that incentivizes your audience to perform tasks in exchange for entries into a sweepstakes. You can customize your widget and place it anywhere HTML is accepted, including Wordpress blogs and Facebook pages. You just have to provide the promotion details and plug in the prize. You can grow your audience across your social networks, including Facebook, Twitter, and Pinterest. When your promotion ends, Rafflecopter gives you the tools select and announce the winner.