my new favorite thing

i may be the last frequent flier on the planet to use this, but how sweet is farecast? it analyzes trends and notifies you of the best time to buy an airline ticket. for example, in its infinite wisdom (confidence 80+%), it is telling me to wait to purchase a flight to isla holbox in mexico for an upcoming (may) spay/neuter clinic. okay, psychic farecast, i await your direction . . .