Only useful if trading for things outside of TF2 I don't know if anyone else has thought of this before me, but someone probably has. If you're trading a TF2 item for anything that cannot be traded through TF2, such as money, Steam games, blowjobs (lol just kidding), etc. then ask the person you're trading with to send you a TF2 item trade of equal value (keys, buds, hats, metal, whatever) and tell them you will hold onto their keys until you receive whatever you were originally trading for. If they don't give it to you, you lose your item, but you get to keep their keys or cosmetic items they sent you instead. But, if they hold up their end of the deal, you have to hold up yours as well, or you'll be a scammer too. Remember, keep an eye on the chat box in the trade window. It will show everything you and your trade partner do. After both of you click the Ready check box, make sure the items they are offering you are the ones you are supposed to receive. If they quick-switch, the checks will disappear and you'll see in the chat box what was switched. And, just to be sure, always be the last one to click that big green button.