Note: Starting in the next few days, items purchased for Counter-Strike: Global Offensive either in-game or on the Steam Community Market will not be tradable or marketable for one week after purchase. We are making this change to combat fraud and scams, and to help matain a safe and healthy item economy within Counter-Strike: Global Offensive.
Valve's update is about to ruin trading and betting within the global offensive/dota and TF2 community, please vote to stop this disgraceful update.
It's just not a feature the community wants in the game. We understand your intentions but scammers will find a way to scam and the best way to avoid that is just remind people to be cautious, not put a roadblock hindering the experience of all the other users.