The links on the following page may or may not be on that Web Developer's Handbook I wrote earlier about, but it's a nice small collection of some popular CSS tips and tricks. Much easier to digest and sort through if you are looking for something specific or something to experiment with. Just viewing the list quickly raises my eyebrows. I've had a lot of issues getting centered multiple columns to work with footer bars. Looks like they have at least two links that may give me some insight into make something like that work! Very useful list!