I've never heard of BTC trade India.
It's a scam for sure.
If you want to buy or sell Bitcoins, I'd recommend using a trusted exchange like Coinsecure or Zebpay.
That is same like saying "Coinbase is scam because I've never heard about it."
Such comment can only come from an uneducated person. You can claim something only if you are able to support it with facts (such as delayed payment, etc).
I understand what you mean.
I've tried almost every Indian exchange and I've never heard of Btcindia.org and I'm sure nobody here has.
It's a scam because Paypal is the only method of payment. (I'm not going to get into the details as most people here have already discussed this.)
The address mentioned on that site is 10 mins away from where I live.
So, I know that there is no Bitcoin exchange over there.
If you did trade BTC with them, it's probably going to get charged back.