Setting Time Limit for Trades
There should be an option to set a time limit for trade offers. This will encourage players to offer and accept trade more. In fact, the transactions would be much fair since everything changes so quickly.
The creator of the trade can cancel the trade at anytime prior to the trade being accepted.
So if you propose a trade and 2 or 3 days have gone bye with no acceptance, just cancel the trade.
Ali Asri commented
10 days seems a lot. The player who does make the offer might have the ability to set the time.
Proposed trades currently have a 10 day active window.