Agree on the security aspect, and injecting ads would be horrible, I definitely think there are better monetization models here. Plugins are an interesting idea, will give it some thought. Though for now, I'm thinking in a different direction... I think FasterBadger is mainly applicable to mobile (since complex pages would be much more overwhelming to phones than desktop machines), and plugins are less of a thing there. However, a native app that speaks the FasterBadger protocol (essentially an alternative browser app) could be interesting.