Sounds crazy but it just might work: representatives of the Obama and McCain campaigns will conduct a running debate on technology and government via Twitter in conjunction with the Personal Democracy Forum conference.

Talking about honing your message.

Actually, the participants and moderator Ana Marie Cox will have some leeway: "Mike and Liz will be working within Twitter's 140-character limit for individual tweets, but they can link out or post multiple tweets as part of their answer to a question."

Let's hope Twitter is up to the challenge.

I'm a panelist at PDF, which will be held Monday and Tuesday of next week in New York, talking about local politics and the internet.