Ah, if this is in lime green text, then that would be the Group chat. If y'er not in a group, 'tis not unusual f'er people to get a random online status from an unknown person. Just a glitch in the clockwork, ye could say.I'm not sure if that was a glitch, I've already seen this person more than one time and always appear the same text in the chat, and I wasn't in a group, hmmm maybe she/he was a hacker? >.<
Other than that, I'm not quite sure what else that could be. I'm not quite sure what y'er wanting to do with it, by the way. This is just a notification that lets ye know someone has gone offline.
Perhaps ye can elaborate on what y'er wanting to do?