I don't know if you guys use AP Mobile, but I find its breaking news alerts to come in handy when I need to stay on top of developing stories. You could say the same for Southwest Airlines' new app, which will keep you travel gurus informed on what the airline has to offer.
Available on your iPhone or iPod Touch, the app allows you to book, confirm, and check-in for flights, while its new "Ding!" feature immediately alerts you to any new and upcoming airfare sales so you can get the most bang for your travel buck. Plus, you can book car rentals, get flight schedules, and redeem your Rapid Rewards points. Great for people who love to take advantage of cheap fares, maybe not so great for those workaholics who never take vacations. PS — you should do that more often.