So I'm in game, hopping from encounter to encounter, and as usually happens when I'm playing at 2:30 in the morning, I'm nodding off. I'm not entirely asleep, since I have vague memories of moving around, collecting resources, fighting monsters, collecting treasure, etc... but I'm obviously not all there...
All at once I find myself about 80% awake and discover that I have somehow joined a group.
I'm not entirely sure how I managed to do that in my sleep. I'm pretty sure I didn't accidentally toggle the group finder. I guess someone was recruiting, saw me wander past, and fire off an invitation, and in my less than conscious state I hit accept. I couldn't have been in the group for very long, because I certainly wasn't doing anything helpful for anyone and I'm pretty sure I would have been kicked eventually, since that's usually what you do with non-helpful party members.
Anyway. I sheepishly apologized, quit the group, and logged off in shame. I'm going to get some coffee, log back in, and see if I can rebind the "accept" key to something a little harder to kit.