PDF is by far one of my favorite conferences of the year.
First of all, it mixes my two biggest passions: politics and technology. Secondly, it's just so high level. Looking around me, there are people who are genuinely interested and interesting. For example, Craig Newmark, of Craigslist, is sitting next to me and totally engaged in the talk.
I guess you could call it the DAVOS of tech. And that's where I'll be for the next few days.