Some of us here at TUAW have been known to hoist a pint or two of a frosty beverage now and again. When doing so there's quite a few selections from which to choose to satisfy that urge for something cold and refreshing. One choice often made by me personally is Guinness. But what if I want a Guinness after a long day but can't figure out where to go and get one? Fortunately, there's an app for that: the Guinness Pub Finder.

To commemorate the 250th anniversary of Guinness on September 24th they have created a new iPhone and iPod Touch app that will, according to the company, allow "consumers of legal drinking age across the US (to) join the celebration and more easily raise a toast with friends in the future." Which, of course, sounds great unless you happen to live in Alaska, Arizona, Arkansas, Georgia, Hawaii, Indiana, Kentucky, Montana, Ohio, Pennsylvania, Texas or West Virginia where the app is forbidden by law from working. Yeah, I don't get it either.

Even if you can use this app for its intended purpose, it actually isn't just about helping you find a drink, although it does do that pretty well. Here's a breakdown of its main features:

• Locate a Pint - uses GPS to locate the consumer and the pubs serving Guinness nearest to their current location. It then provides name, address and telephone number of the pub chosen, access to directions, and an email setup to invite friends to join.

• Know Your Pint - provides a tutorial on the 6 Steps to Creating the Perfect Pint, and also includes a ruler that can be used to measure your pint's head.

• Fun Extras – includes animated screensavers, a countdown clock to the "Arthur's Day" celebrations and a live feed of the latest news regarding the Guinness 250th Anniversary celebration

• Responsible Drinking – Provides consumers with the DRINKiQ resource which shares important facts about alcohol to aid responsible choices.

The app is US$1.99 in the iTunes store and its available now.