If you're one of the many geeks heading to Austin to attend South by Southwest Interactive, you'll want to download this app ASAP. Called TabbedOut, the app lets you pay for your drinks via your iPhone at over 30 bars in Austin. Just place your order through the app, and it pops up at the bartender's register to serve.
You store your debit or credit card info in TabbedOut and pay a convenience fee of $1 each time you use. Plus, it even lets you add tips and get the numbers for local cab companies if you've had a little too much fun. This is great for forgetful folks, who sometimes leave a bar without their debit card only to find an extra charge on their account the next morning for not closing out the tab. TabbedOut is currently available in Austin, TX, and Chico, CA, but will be rolled out to a few more cities like SF, NYC, and LA over the next year.