Kalakshetra
Provides information on an institute which was established by Rukmini Devi Arundale. She was responsible to revive the innate beauty of BharatNatyam when it had fallen into disrepute.
http://www.kalakshetra.org/

Sruti
Sruti is the first internet edition giving information on the Dance and Carnatic Music scenario in India. The magazine is exclusively to Indian music & dance, started in October 1983.
http://www.sruti.com/

Kutcheri Buzz
An very good site with all the current news and happenings in Indian Dance and Music.
http://www.kutcheribuzz.com