Facebook seems to be running a special promo in the Indian market. Mobile users creating a new account are being offered a free Rs. 50 talk time.
You can check out the signup form here.
Once you sign up and confirm your account, you will receive the talk time within 3 days.
If you have an existing Facebook account, you can refer a friend and both of you get the same benefit.
We are not sure what Facebook is trying to do with this special promo. It is bound to be misused. There are going to be complications related to users not getting the promised talk time and so on.