Another thing you might want to do to promote is to use Facebook in conjunction with doubleyourlikes.com. You have a Facebook page that offers "deals" and in order to get the "deal of the day" and access to other deals, the consumer has to "like" the Facebook page. Once you do, a popup up comes up that can say something like: "Don't Miss out! Special Deal of the Day! Get 500 free penny auction bids when you sign up for a new account at..." Or however you want to spin it. Works really well...