I'm starting to get worried cuz what if SNSD ,the only girl group in Sm that really came as the BIG hit, gets old. Like they are not able to perform anymore. And SM will form a new girl group.. I'm really scared of that. And for f(x) too.. This two girls are good but why do I feel that something's missing. Like They don't have the aromas like f(x) and snsd. The only girl group in sm. Oh gosh. Time is passing by too fast. The first time I saw snsd was in 2007 and now 7 years has passed. And F(x) I hope they will stay young forever... Thy can never be replace by new girl groups. They are just legends. No offense I don't hate these two girls. They are talented.