yes a wed based online trade would be good to prevent scamming and stuff
and also we could trade/sell/buy whenever we want if someone can't access the game due to errors/bugs
also we can have more than 3 trade slot unlike ingame
http://boutcheetah.zylongaming.com/index.php?topic=52507.0 (http://boutcheetah.zylongaming.com/index.php?topic=52507.0)
^just an example cus people could be scammed due to the limit of the trade slot