Would you cover the cost of advertising or would that be out of my pocket? For example, an Search Engine Advertising campaign would probably be one of the best ways to build traffic to your site, which in turn should build sign ups. The monthly budget can be at whatever amount, but would you be the one covering that budget?
Also, an email campaign would also be a great way to drive traffic/sign ups. If you have a list, I can send them for the cost of about $.0125 each. I generally charge a premuim on those of course, as well as a set up fee, but if you'll cover the cost, I'd be willing to get paid on a "per sign up" basis.
Regardless though, I would need to know how I would know when and if people signed up.
Thank you,
Eric