[petercooper]

There's an evolutionary process at work here. Once e-mail newsletters become passé, we'll see weekly fax shots, then snail mail, skywriting and, finally, personal visits at $1000 each. Then you realize you're a consultant.

I jest, I started an e-mail newsletter myself a week ago ;-) It's interesting to think where all this might go though. I bet if celebs could charge a few bucks a month to follow them on Twitter, there'd be a massive revenue stream there from gossip hungry admirers.