What Should I Read?
And interesting idea indeed.
WhatShouldIReadNext.com is a cool site where you tell it what you've recently read and liked and it will suggest books you may want to read next. The suggestions are based on lists created by other users. This means the site is only as good as the number of users it has. Of course many of the books I've read don't show up at all in this database. Not too many people read Google Hacking for Penetration Testers for enjoyment.
del.icio.us:
Here is a cool idea that I've always enjoyed.
del.icio.us allows you to store your bookmarks online. It's a cool community approach to sharing links and such. It also gives you access to your links from anywhere. That's awful handy. And of course there are
Greasemonkey scripts for it.