US Airways has "The Hub" which is pretty much like Travelnet, but the only differences are you can check in for your flight four hours before departure online, all seats listed not hidden, and you don't have to pay for buddy passes when you book them. It offers the choice to either pay when you book or the buddy pass rider can pay when they check in at the ticket counter or kiosk. It became a big pain in the arse before AAA/HP merged res systems.