Lead developer Hakkyu Kim says that all in-game items are freely tradeable, which differentiates ToS from many of its bind-on-equip or bind-on-pickup contemporaries. There is a catch, though, and it is that an item's Potential stat will decrease by one whenever it's traded.
The map system generally shows the location of your party members but not other players. However, Scouts can "select a spot on the map to find out which players or enemies are there and share this info with party members." There's more to this week's dev blog, so click through the links below to give it a full read.