Craigslist really is a roll the dice, i've sold computers cars etc on there and you really have to be careful. I guess you have to be attuned to how the person is acting about the trade. I personally would never sell bitcoin on craigslist
The spam one gets from craigslist is enough of a deterrent for me to stay away unless I'm having or looking for a fire sale.
Yeah a lot of spam from there, and the other problem is taking an ad down but it actually not being "down" until weeks later so if you've sold an item it's still listed. It's ridiculous, I got a phone call not a couple weeks ago about a phone I listed probably half a year ago. Of course I don't have that phone.
Some guy probably just saved the info and was checking back.
I do that myself sometimes.