Sweepstakes and giveaways! Contests... not so much. Rafflecopter was created as an easy way to run giveaways or sweepstakes. Sweepstakes are defined as prize giveaways where the winners are chosen at random where no skill is involved (unlike an essay contest, photo/video contest, some kind of contest with a voting mechanism, etc.).
You can run these promotions on your website, blog, or Facebook page.
Rafflecopter is primarily targeted towards those who would like to run a sweepstakes with 'no purchase necessary'. Some folks have run raffles (where money is collected as an entry) and contests with our software, but admittedly, that's not what our app was designed for.