Vancouver.
The first keynote at AoIR 2007 is by John Lester, the Boston Operations Director of Linden Lab, who run Second Life (John's SL avatar name is Pathfinder Linden). He notes the fact that each avatar in Second Life represents one human user as a key feature of this online world (which is different from some multi-player online games), and also points out again that Second Life is not a game, but a virtual world. As a result, too, Second Life is extremely dynamic in its content, and there's no way to cache or pre-load much of the world; the SL software in essence works much like a Web browser, as a generic interface to whatever exists at any one place in the virtual world.