Well my title is not meant to understand that paytm is a bad shopping site. What I mean is we jnow PayTM better as that online recharge app and now even better as Mobile Wallet.
Believe it or not PayTm started as a recharge app but with change in usage and demands it integrated online shopping and wallet.
Its wallet is very secure and personally I use its recharging facility and wallet. Though I have never got the chance to shop from it but at times I see offers from PayTm which are worth giving a try.