Jeremy Silman has reviewed a vast diversity of important new chessbooks at Yasser Seirawan's Inside Chess Online site. The selection of the books is for the US-market. Silman rates the books on a 0 - 10 scale.
John Elburg reviews every month about a dozen or more chess books, CD's and magazines. You find here also reviews of Chess CD's, some Magazines and of german chess publications. Elburg apparently reviews all publications that are sent to him. Most reviews are very friendly.
John Watson's reviews are hosted by TWIC, sponsored by the London Chess Centre. John Watson has begun about at the beginning of 1999. His reviews cover many of the very interesting new chess publications.