Tripit Pro saved a trip for us this week. We were flying SAN-SFO-int'l, with a 2 1/2 hour layover in SFO. 4 1/2 hours in advance of flight time I got a notice that the flight was delayed more than 2 hours, leaving a 23 minute connection. I quickly called United, got on their flight leaving in 2 hours, grabbed our luggage and headed to the airport. United sent no notice of the delayed flight. I shudder to think when and how we would have made it to Europe if it hadn't been for that Tripit text.