Is LinkedIn worth $1bn? Yes. Why? Because Bain Capital says it is. The stock is not public, so you and I cannot trade it. The whole notion of the average punter trading tech stocks (or the average punter's pension fund trading it on your behalf) seems rather quaint, from some bygone era. But why has the public market for tech stocks disappeared?

What does the “Media Business Model” mean? Fred Wilson says: Most web apps will be monetized with some kind of media model. Don’t think banner ads when I say that. Think of all the various ways that an audience that is paying attention ...