I've recently been *poofed* out of 5 TF2 Keys and now i've been noticing ( in the last 2 days ) that people are in a hurry to sell their keys on the community market : http://steamcommunity.com/market/listings/440/Mann Co. Supply Crate Key There's no reason for this to be happening , it usually happens when the Christmas/Haloween/Summer update is already out so people are in a hurry to sell to get funds to support their unboxing needs, but not now. Anyway take this as a warning to be cautious about any key trades that you make. Selling an unusual with an extremely high buyout and you someone's willing to pay it - I'd think twice.