Its not all bad. Craigslist is where I found a local breeder that I got my firefly from, ballpythonsunlimited. He was very professional and has beautiful snakes. I wouldn't hesitate to buy from him again.
That being said, I do realize craigslist is a breeding ground for scammers. Just do your research and put your hands on the animal before handing over the cash. When I use craigslist it is local pick up only, cash only...