Well, the new system goes a great distance to fix that.
First off, adding books is no longer a big mess. I can basically add an ISBN and gamedev will fill in most of the rest of the book (including the picture). Reviewing and featuring a book on the front page is no longer an overcomplicated multi-step process. Also, the system can automatically de-list books that are too old or have gone out of print.
Mind you, the purge process isn't perfect. Mainly because the concept of a "print run" in book parlance is going away. There are so many one-off publishers now that books can basically stay in print forever, as the "inventory" just consists of a PDF file sitting on their server somewhere, and a book only comes into existence after you press the "buy this book" button. So there'll still be a process of manually purging out books that have worn out their usefulness (like the five books on Flash MX 2004 that are still listed) as well as a process of "immortalizing" books that are OOP but are still significant and/or useful. But the list will be much more useful than it has been in the past.
So my plan for the books is the following:
1. I will review one book per week. It'll be a shorter review than in the past and it'll be based on whatever books are sent to me.
2. That book will be listed, reviewed, and posted as the featured review on the site. The current one is already up now.
3. Any other programming books that I receive via press-release will be listed and categorized but not reviewed or featured.
We'll see how this works in the future, but even without new listings and/or purges, it looks much better. The five "latest books" are actually recent titles. The top-selling books list actually reflect reality. The categories need to be re-done, but that'll happen with time.
So again, Gamedev is getting better. Stuff you've blown off as stale crap is getting less so. It'll take some time to get a good mass of new books as well as purging stuff nobody cares about. But it'll improve.
So if you haven't been around in a while, http://www.gamedev.net/books