I have only booked buses from this site.My friends says they had horrible experiences booking flights and hotels, but still, so far bus booking was trouble free from Goibibo.
They do offer referral money, which was so useful because every time I booked a bus, I used to get a discount of 20% that is from the referral cash.
The user interface is also so good, you can book ticket like you are booking for a cinema, I mean you can see all the seating arrangements and can pick up the seat as per your requirement.Flagging neighbor’s gender is a useful feature for protective ladies, whom doesn’t see comfortable to travel along with a male.Personally I don’t like that idea, but sill, some ladies do.For them its very useful.