How many times have you been on a plane getting ready to take off and watched people furiously typing and scrolling away on their BlackBerrys in order to get out one last e-mail before takeoff and they're forced to “Turn off all electronic devices”? Well, to the delight of many a business traveler and Web addict, those days may soon be a thing of the past.

This week JetBlue announced it would be offering limited e-mail and instant messaging services for free on Flight 641 from New ...