Note that almost all sweepstakes (95%) are user submitted. WinASweepstakes allows users to submit affiliate links for the contest. Affiliate links means the user who submitted the contest will get a commission if you click through to the sweepstake and fill it out. It doesn't take away or reduce your chances of winning. It just means that the user who submitted the link will get a small compensation.
WinASweepstakes values all user submitted sweepstakes and contests. Some of the affiliates often submit popular and large prize contests that is highly valued by visitors of WinASweepstakes.com and would not be listed without their help.