Question: how do you know if your getting scammed on craigslist?
Answer: Grammar and spelling. This isn't a guaranteed tip-off, since plenty of people simply have atrocious written language skills. ... 
Buyer is not local. ... 
Cashier's checks, money orders, and wire transfers. ... 
Too good to be true. ... 
Free stuff. ... 
Cheap rentals. ... 
Lots of money for a little work. ... 
Purchase protection.