Can I have a private list of drop sites where I can refer my own list of people to?

Unfortunately, no.  All of the sites on the map are available to all of the companies who use the service.

Instead of private lists, we use a referral system that tracks signups that come from your website.  We kick you back some credits for referrals that you generate.  Send us an email if you're interested in participating in this referral program.