Scams when selling on Craigslist or ebay

LetGo is another app, that's a total waste of time. you put something up like a baby crib, and 8 people ask you if its still for sale, you respond yes and they disappear. I think they are farming Email addresses, text numbers or something.....I have bought on craigs and had them ship it, not burned yet except the one I paid USPS money order for and got it all back 6 months later when we compared sigs and found his "roommate" forged his sig and cashed it. Buyer beware.