FB has been terrible in my experience. Craigslist is still ok if you can filter through the spam. I once contacted a seller on FB for an item that was 300 cash. We had set a time for pickup later that day and I went to the bank to get the cash. I messaged them when I was 10 minutes out and they told me not to come because they had already sold it. I totally understand selling it if I had not been communicating or had been ignoring their messages, but the last thing we had messaged each other was just a few hours prior while agreeing on a time. They didn't even bother letting me know they had sold it. I would have just arrived at the place and they never would have shown. That, among a lot of other issues, and I won't buy or sell on FB anymore.