"Peter, this may be a bit premature, but it isn't silly. For example, in many ways, NextJump is an intention web ecommerce site. People register their preferences - stuff they are looking for - and merchants bid to provide it. They have gotten sufficiently good at fine-tuning preferences that one in eleven offers are accepted. Pretty amazing. There's going to be a writeup on the company in the NYT on Sunday, I believe. (I was interviewed for the story. I don't have any connection to the company, but have met with them a couple of times.)" - Tim O'Reilly