I think it isn't that you end up getting scammed on craigslist, but that 9 out of ten replies are from scammers. It creates annoying overhead in sorting them out.

-- Hi! I am buying this as gift for my Son. Are you firm on the price? Email me back please,though, you may send me a text on the number below because I am hearing impaired but I think email is the best for me. -- Hello, i saw your listing on craigslist and Am wondering if the item is still for sale. Please do let me know if I'm still able to purchase as i am willing and ready to make purchase,get back to me with the condition asap.Thanks

Somebody on another site got paid in counterfeit bills on a used iPad.