I've created a new blog devoted to book reviews: Booked Up. (The successor to Read This, Not That, which was just too ambitious to keep up with.) It has all my book reviews from 2006 on. This blog will become my "writing" blog -- i.e., the place for stuff other than book reviews.
UPDATE March 4, 2010:
So much for good intentions. I have not touched this blog in a LONG time! I am happily writing things for pay when I'm not writing book reviews, so the fate of this blog remains uncertain.