Good idea +
So basically, I've been hating the fact that I get no indication of when someone adds me as a friend and I was wondering if a feature could be implemented that tells you when someone adds you.
Here are a few ways I think would work nicely:
1. Notification PM by banchobot or a message visible to you only in #announce. or the new #userlog http://osu.ppy.sh/forum/p/2075711
2. Another field below the offline users field in settings that shows users which have you added.
3. on the users profile page display (has added you) above the become friends button. http://osu.ppy.sh/forum/t/99627/
It's a simple feature I'd really like to see and I know others would too.