1. Idk much about K-ent, I second poking around on omonatheydidnt for business practices and things, but all I know is that Korean fans and antifans are sometimes really scary asldjf - that guy in one of their boy bands who had to quit and went back to the US coz of some anti-korean comments he made on his myspace four years ago came to light comes to mind... >.> The news was in my flist a lot!

Also, any reasons why you're asking these questions, specifically? XD

2. Mirotic, Purple line, and Loving you from DBSK, Fire from 2ne1, Heartbreaker from G.Dragon, Fan from Epik High... hmm, I don't know too many Korean artists either lakdjfdf. :p