The first several times I used CL, it was a wonderful success.
Bought a very nice chair at a great price. Met with buyer at their apartment (other people I trusted were given all the same info I had "just in case"). The seller and I haggled a bit, and then were kind enough to help me move the chair. My rear is resting comfortably on it as I type. Hee.
Sold a used Wii for a smidgeon under retail (although I could've scalped it

). Buyer and I met inside of a large, busy bookstore and we swapped w/out any issues, I let him see it all before the final exchange.
Sold a used Nintendo DS Lite, case, several DS games for almost exactly retail despite owning the unit for over a full year. Met up w/ buyer in a busy coffeeshop, she looked it all over, then we exchanged.
Sold a broken MB. The LCD was absolutely gone-- everything else worked w/out a problem. Met at a busy doughnut shop, buyer looked it over, we exchanged goods/ cash.
Folks on MR didn't think my asking prices were fair-- yet all of those
sold on CL for my asking price and within 1 hour of my posting the ad.
CL worked well for me.
Until... I attempted to place an ad this last December and it didn't show up in CL searches, but did if I copied and pasted the link that CL emails you as the seller. Shrug.
So I'm a bit irked about that... but overall, I'm a fan of CL. No PayPal doohickery. No eBay stuff to deal with. Less chance of being scammed (I think).