Great article about unschooling

Here is a great article about unschooling.  I like the useful list of links at the bottom.
The Beginner's Guide To Unschooling 

Here's a couple of other good sites I ran across recently:

http://www.studyladder.com
http://www.frugalvillage.com/2011/03/30/create-kids-crafts-in-your-kitchen/