In Feb and March 11, Cleartrip.com has been running a consumer offer, in which they offer a Free ticket Spicejet (and similarly by Yatra.com on Indigo). Free Ticket needs to be booked 15 days in advance, and has many other restrictions.
As can be expected, the free part is only the Basic Fare. But please check any flight of these two airlines of 15+ days departure in current listings- they have all kept their Basic Fare at Rs. 1.- or some very small nominal amount! In fact, one ends up paying a higher fare to Cleartrip than the Airlines directly available fare; while the saving through this offer turns out a clear case of deception.
A conspiratorial hoax by the Airlines and their distributors on Indias naive consumer?! Worth a legal check!