diBenga is right, I can't even give a G4 tower away these days! So an iMac G3 is even harder to sell. You might find a collector looking for that colour etc.
My Avatar is my Macbook Pro with an original Apple Sticker.
I use a 15" Macbook Pro, Mac Pro, and a Core 2 Duo Mac Mini. I also use an Apple Cube dual 500 with a radeon 7500 and 1.5 gigs of ram.