THE NEW YORK TIMES
-Start with the best! The NYT Book Review Dept. has some of the most influential and well read critics out there!
THE SAN FRANCISCO CHRONICLE
-The reviews on the Chronicle are both well written and at times entertaining, I highly suggest it.
-Kirkus is a well written site that reviews books in every genre.
-Book Brothel is a very good site if you wish to read reviews of books the larger guys above haven’t heard about yet.
-Despite its odd name this is a very well written site that reviews numerous books from now, and re-reviews books classic books of all genres.