Having been in the office of One Laptop per Child (OLPC) at 2 a.m., and now on a Sunday afternoon, I can confirm that these geeks work hard. I now understand the introductions to some of the people here when I first visited - "This is X, he doesn't sleep."

It's been an intense trip - finally meeting the really great people I've been working with for the last couple of years, and a bunch of other interesting folks besides. Vinay Gupta, the Hexayurt guy, the closest person I've met to a mad scientist. Andrew Lamb from EWB-UK, and colleague in the Appropedia Foundation, had great ideas about working with organizations, and showed me some of the sights of London (very cool). The other day I finally met Lonny & Cat, also from Appropedia - great to meet in person, and it felt very natural to be with these kindred spirits. We were in a crowd of appropriate technology buffs, at the International Development Design Summit.

And MIT - it's wonderfully geeky. If I'd been at MIT, I would have been teasing other people for being geeks - in the most good-natured, reverential way. I could definitely spend a lot more time in Boston, and hope I get the chance in the next year or two.