Hey, I was recently playing on my Terraria server with my friends, when all of a sudden someone called 'Terrafirma" joined the server (My server is passworded so god knows how they joined). I couldn't see them anywhere, so I asked who they were and he/she/it left. I did some googling and found that 'Terrafirma' is a mapping tool for the game. Anyone care to explain what the hell just happened? :S
