Tried and deleted
I tried Konfabulator, a couple of times in fact (on different machines ranging from a Dual 500 G4 to a Dual 2 G5)
Liked it, but found somethng I liked better for the limited use I made of what Konfabulator can do.
Once Panic ships their little app I'll be buying it. But for anyone who wants the vastly greater control Konfabulator gives you... Pay for it.
I must own about every app Unsanity makes (Windowshade X, Fruit Menu, Labels X, ShapeShifter) and I can't live without James Thomson's DragThing.
If it's worth keeping, it ought to be worth supporting.