How do books come alive?
The new book format by Neil Stephenson is nice, but “too big” – it assumes hundreds of people at least actively geek about it, which means hundreds of thousands of readers.
The Ning format Steve Hargadon used for Book Discussions is “too small” – Ning groups are too fragmented for the purpose, though the idea rocks.
LivingMath reviews from Julie Brennan are “just right” – if they were in a wiki, or the Yahoo group discussions were public and searchable.

Let’s mix the three and make something like MathTropes (like TvTropes) for family math books.

Link to my 1997 picture at Shodor. The materials we made back then are still up, and used.