Yeah, alot of the time I just wander off the computer in the middle of a conversation and come back half an hour later and my contacts are all offline. I GET DISTRACTED and I can never be bothered typing out 'BRB' a million times. I always sign in as 'Appear offline' to begin with though and only use the 'Busy' or 'Away' if I'm doing college work or I'm on a game.