This provides a solid overview of the history, general functions, and common uses of Wikis, and for that I am glad that I read it. One thing that I didn't consider until after I bought it -- and was using a few wikis already -- was that a great deal of the information was engine-specific. PBWiki was a common example throughout the book, but I don't use PBWiki, and I don't like the interface (I guess I got used to Wikispaces, which works perfectly for me). So although there was a great deal of good information about what I can do with a wiki, so much of the how wasn't useful to me, since I'll have to go learn the particulars of my engine of choice, rather than the ones in the book.