ePrize

ePrize is a company that administers sweeps and contests.

You can pretty much tell when you are entering a sweeps that ePrize not only administers, but has designed. Register once then you log in each day to enter, play the game. They usually have a pretty clean look and there is an option to not play the game (click here if you have Flash disabled) on the ones that offer instant wins. That leaves a good impression not only for ePrize, but the sponsoring companies.

ePrize also administers some "surveys", many times sponsoring the large prize. In this case you just take it for what it is, either you take the time to go through the "survey" or not.

The others, you can tell the company sponsoring the giveaway has the control and ePrize is just the administrator. In many of these, to have a chance to win the instant win, you have to play the game or answer trivia question.