Just finished talking in Second Life. The slides from the talk are available from SLX. I've got into the habit of writing a transcript for my SL presentations - basically in case the audio fails for some reason.
The talk focuses a bit more on the way that people now get information (through blog posts, articles, indexed by search engines) and the Q&A after the talk was more about that than the technical content of the book. This is a domain that I've given a fair amount of thought to. When writing technical books there is a challenge to balance the information so that it includes the necessary details without writing material that will be out of date by the time that the book hits the press. Fortunately a large amount of the information that developers need is relatively long lived. The challenges come when describing a particular revision of the software, or a particular processor - details which can be very useful for people, but also details which may not age gracefully!