Last spring, I gave the keynote address at the Museums and the Web conference in Florence, Italy, speaking in the glorious confines of the big room at the Palazzo Vecchio; the organizers were kind enough to put my talk online. It was very well-received at the time and lots of people have since asked where they could get it -- and here it is!

http://feeds.boingboing.net/~r/boingboing/iBag/~3/t0kuXE8THfs/museums-and-the-future-history.html