It's just rummaging via your computer.
We don't use CL but have found some great deals on EBAY for stuff we needed.
Tonight my wife scored a dual screen DVD player to use in the car for $40.00. This version retails for close to $100.
That being said, I do think that both of these sites have hurt business. Folks buying used items don't feed the need to build new. It trickles down from there.
I won't be buyinga new vehicle unlessI win the lottery. Why take the hit in depreciation when you can get one a few years older for wayyyyyy less?
Yes, I have become cheap since I was laid off.
