------
Try presenting your users with a paid and viral choice. First oauth them with the promise of the service you are offering. Then present them with the value proposition: "You are about to save X minutes by automatically deleting Y DM's". Then offer them two choices to compensate you for that value: 1) Follow your twitter account & tweet an endorsement (which could be as simple as a variation on the value prop ) or 2) pay you $0.99 for a one time service.
This will allow you to a) measure your funnel, b) advertise without spending any money, c) build an audience, d) use that audience to build a feedback loop and test other ideas, e) make money in a way that seems to align with your users usage habits.
Thoughts?
-----
What do yall think, could this dog hunt?