theres a guy i talk to online, and he does this ALL the time. we'll be smack dab in the middle of a conversation and he just randomly goes offline. doesnt try to come back...just goes offline. drives. me. BONKERS. hehe. i feel your pain everyone! :D
If I really don't want to talk to someone, I go invisible... then just keep talking to the people I was talking to until they go offline.. LOL. That normally happens when I get pissed at someone though.