Chennai is the unsung hub for online business success story. Following leading online properties functions out of Chennai.
Sulkeha: Online classifieds that work
Sify: Own's the indiaworld properties, Samachar.com, Khel.com, Khoj etc.
Bharatmatrimony: Leading matrimony business online
numtv: A division of pentamedia, this is TV over internet and my friends in US actually subscribe to this and they are happy. Blazeway is the technology solution provider for numtv.
Penta-media: Movies, distribution.
Why chennai is the hub? I believe skilled talent pool is one of the main reason.