None at my uni that I know of. At least, none on the forums it seems.
Back when I was at school, my best friend (Liquid) got me into the game and we played a lot.
Then another friend Bongo used to play too.
And finally another friend, whose in-game name I've forgotten, and one of his friends (more an acquaintance of mine) would occasionally play.
So all in all there were 5 of us who played, 2 pairs of 2 playing regularly together, and 1 who wandered between servers.