Accosted by a man with a video camera who asks you what Web 2.0 is all about during Web 2 Expo, I had a crack a the subject in a few pithy sentences. The video by SocialTNT is below, but if you don’t have 5 minutes (for the whole video) then here’s the short version. I think the Web has gone through three stages, or what I call the “Three Ps” :

1. Pages (”dumb” pages with no intelligence or data)
2. People (social networks producing richer data and eventually platforms for applications)
3. Power (all that data producing powerful intelligence about the things we really want to know, like ‘what’ or ‘who’ am I looking for etc).

Luckily, there were several, far more intelligent answers from others such as Dan Farber (CNET News.com), Marshall Kirkpatrick (ReadWriteWeb), Dean Takahashi (VentureBeat), Scott Beale (Laughing Squid) and Josh Lowensohn (Webware).