In a recent blog post titled "Web 2.0 for the rest of us" and covering also an O'Reilly book on Web 2.0, Tim Anderson mentions also my book "The Social Web" commenting:

It is a brisk tour of the sites and concepts that form today’s online communities. Typical readers of this blog probably won’t find anything new here; but I liked the common-sense tips on things like blogging and creating interactive web sites.

I basically agree... and thanks for the reference.