Well, I guess I got suckered by the sweet little con-job MMT pulled on thecomplimentary free taxi drop too. Sure enough, there was no taxi, nothing, except a very tired and sad looking lady from Kingfisher who told me that there were a few every day who fell for the same trick by thismakemytrick.com people. On price, once you add up the taxes and service charges, you find that the total is costlier than buying direct from the airline. On cancellation, MMT levies its own add-on cancellation/re-scheduling charges which are very high, minimum 750/- or thereabouts. On liability, face it, the airline has every right to refuse carriage because the e-ticket/receipt is from MMT. On convenience, last minute/last-day deals are simply not possible on MMT, while they can be found on airline sites. On their new 20% back if bought through VISA deal, hang on! Might be a close relative of thefree taxi business, and the fine print is quite impressive. All in all, MAKE MY TRIP is going to have to work harder and with better ethics if they want to survive. As of now, they appear to be just another dot-com pre-bust. Be careful before you trust them especially with your credit card details is all I can suggest.
Dec 2011: Still as bad, maybe worse.
April 2014 - used them and while they are reliable for booking airline tickets, the old issue is still not resolved so I guess thats forgotten. Upgrading to 4* and also changing to "Recomend" though I wish there were a "NEUTRAL" option too.