I always knew Craigslist existed, but never used it until recently. I found myself in the same situation as you: moving, and tried to sell some stuff. Most email replies turned out to be flakes. Some phone call replies turned out to be flakes. The worst was this woman who asked me to hold an item for 2 days only to end up being a no-show. I even called her back asking her if she was still interested on the second day to which she replied "yes, I'll get back to you with the time." Argh. In the end, I managed to sell all the things I needed to part with but not without frustration. I learned that for every 10 people who are interested, at least 5 are flakes.