Cleartrip.com is a transformation in the hugely populated travel booking sites sector. This sector has huge competition and u have to be extra unique to stand out in the crowd.
Cleartrip does that. It has a host of features which other websites do not provide like a monthly view of the fares(other sites have now started to some extent, but Cleartrip was the first one to start it), setting up fare alerts for your travel sector and u can decide the frequency and timings of the mails u want to receive.
It also offers the cheapest fares available anywhere.