The blog Upgrade: Travel Better alerted me to a new trend: airlines notifying their Twitter followers of hot deals. According to the Chicago Tribune, United Airlines calls them Twares and JetBlue calls them Cheeps. Recent Jet Blue fares included Palm Beach to Laguardia for $59, and Nassau to Fort LAuderdale for $9 (plus taxes and fees, of course).
But Upgrade also noted that Twitter fares have some fine print: some of them, for example, won't earn you any frequent flier miles.
By the way, Upgrade: Travel Better is a good blog to follow for info on travel deals; recently, for example, it alerted me to the fact that Westin hotels have a buy-two-nights-get-one-free offer going on until December 31.