Yeah soccer is SO HUGE in Greensboro and NC in general, people have actually disowned college basketball, NASCAR, and professional wrestling and have become MLS fans. It's not even about Duke/Carolina anymore, it's all about...well I don't know the names of any of the MLS teams, but pick 2 of them and you'll get it. Soccer will never pass college basketball, college football, high school football, NASCAR, wrestling, bass fishing, or hunting in the South.
The only reason soccer is so popular as a youth sport is because it's cheap to play it and you really don't have to have any skills. Been to a youth soccer game? It's really just a group of 20 kids running around in a crowd chasing the ball. I'm sure I could dig up some articles that say the same thing about how youth hockey is taking over.