I played it some in high school. It's just not popular at all in the states even though I think it's very similiar to basketball and soccer in ways. I am surprised it hasn't caught on here.
It has similarities with basketball, but it's much more violent. And I'm also surprised it isn't more popular in the US, it seems like a sport that's has everything US sports fans like, it's a fast paced violent game with lots of goals scored every game.