Check feedback, talk on phone, ask for photographs that aren’t easily photoshopped. Ask questions that scammers don’t know shit about. Have a bit of faith in mankind. Between buying and selling I’ve completed easily over 100 transactions on here, and out of that I’ve never had a single issue. I did have one scammer try to get me when I made a WTB post, but I checked feedback (nothing recent), asked to talk on phone (made excuses not to), asked for photographs that are hard to photoshop (and got shitty photoshopped photos), and asked questions the scammer didn’t know shit about (and got stupid answers). Using those parameters it was easy to spot the scammer, then I hit the report button on their name and they were properly removed! Easy as that!