[gwsaines]

Twitter has a lot of options, but I'm not sure they need to reinvent the revenue model for their system. I readily agree with MicahWedemeyer that donation revenue models are best for smaller enterprises and aren't likely to return on Twitter's VC investment dollars.

That said, what's wrong with unobtrusive adwords? Or dare I even suggest location-based ads? I know several companies have tried the whole geo-location social networking thing and failed, but perhaps Twitter has enough traction that something like that would be relevant and productive for users.