Check out these affiliated websites. :)
GPK Chase covers the latest finds for unique Garbage Pail kids items, such as sketches, plates, and superfractors. There is also an extensive archive of items going back a few years.
My Retro Life is a great active blog centered on nostalgia from the 80's up to the early 2000's.
Barren Aaron's GPK World is one of the top reference and news sites for Garbage Pail Kids fans. A unique feature of his site is he has a great relationship with the artists and their fans with his casual button-down style.
More coming sometime...