Hipmunk.com even got a shoutout in the @NYTimes Letters to the Editor (thanks, Rebecca!)

To the Editor: Regarding “Fine-Tuning Your Flight Search” (Oct. 16), I love Hipmunk.com. After a few terrible layovers, the “sort by agony” option, plus a visual depiction of just how long those layovers are, is awesome. In my dreams, one of these engines integrates with SeatGuru.com so that when I go to buy my tickets, a window automatically opens with the right seating map to show me where the best seats are.