In my humble perspective, I think it's better for the book reviews to be arranged alphabetically. A monk is far more likely to want to visit there to read the review on say, Mastering Regular Expressions (like I did a few days ago) than wanting to find out when the most recent Perl related book was published and/or reviewed.

However, I undertand your point of view. Some books may be out of print or superceded by newer editions, and this is not always made clear. (I would have cited the out of print CGI Programming On the World Wide Web, superceded by CGI Programming with Perl, but neither of these books seem to have reviews. Hmm).

Maybe somemonk could provide information on whether a book is out of print or has been superceded by a newer edition, etc.