According to http://www.sweepstakestoday.com, 90% of Sweepstakes entrants are interested in buying the product.
Source:  http://www.prweb.com/releases/2011/9/prweb8786147.htm

That means that if you get 1000 entries to your sweepstakes, 900 of them are actually considering BUYING your product.

Those numbers are hard to deny… why aren’t you running branded sweepstakes on your Facebook, Twitter, and Web pages?  

Karmaback makes it extremely easy to setup a branded and fully hosted sweepstakes AND we now guarantee it:  http://karmaback.com/platform/signup_success_guarantee/