Socially Acceptable Way of Making Money in P2P?

I am currently developing a program related to Peer-2-Peer internet file sharing, and I’m interested in hearing on what is the most socially acceptable way of making money.

Over the past few years, we’ve seen banners, spyware *shutter*, and popups.. what do you guys think?

If you *had* to have an advertisment of some type, what would you pick? What would be a banner you’d actually like to click, to make money to pay for the service?

Related Posts

1. Grokhak- Patched version of Grokster 1.3.3
2. Candian ISP: Overage Fees “Not About Making Money”
3. Wilco drummer on P2P: ‘the music’s more important than making money off of every CD’
4. iMesh Gaffe
5. Modifying Windows Hosts File – Death to Free Internet?