I am from south and i really think south indians really need to adopt themselves to become part of india.. Every time they go to other part of India for anything, they feel like fish without water.
In mumbai where i frequent mostly, nobody gives you a different look ..or asks you where you are from. In chennai, it is still a huge problem if one can not talk tamil...as Narain Karthikeyan told south has become a closed society. It really needs to open up.