Bounty hunter , you meet in a certain locations and let your oppent kill you , then you have to wait 2 minutes to survive if you don't you loose your stuff , also you can only take certain items in there.
Party room, do drop trades to differant account. Keep it under 50k, f2p i suggest rune plates or 2h's p2p, glory's (4) or rune plates, 2h's, skirt's, kites.