Is bitcoin popular in India?
Few press releases, events, etc. It is in a nascent stage, but bound to catch on.
How many bitcoiners in India?
We have an estimate pegged at around 10K, could be more.
Is bitcoin legal to be spend in there?
BTC - BTC is perfectly fine. BTC - INR should be answered quite soon from the legal perspective.
Is it legal to open an bitcoin exchange there?
Heavily regulated, but possible. buysellbitco.in is working his shop after a lot of legal consultation.
How India people buy bitcoin?
buysellbitco.in, localbitcoins.com, irc-otc & the forums.