Allow me to publish offers, and upon successful completion, provide to me the email address of the person who completed the offer? I ask, because I would like to reward these folks not with money, but with an entry into a contest? Is that possible? Any out there?
Depending on the ad network you select, a post back would be what you are looking for. That will allow for you to "instantly" receive information about an offer such as who has completed a specific one.
Yes, you can as several companies are available on Internet that does not even require their affiliates to have their own website. Here, only the desire of being an affiliate partner is sufficient to enter into this business.