Credit:
It's no gimmick: CoffeeBuzz is a slickly-produced app, even if the need for such specialized features is questionable at best. Those features include:
1. Coffee locator: find coffee shops near you using the iPhone's GPS
2. Get updates from people drinking coffee near you (similar to the Twitter location app "Twinkle")
3. Share your favorite places to drink coffee
4. Post Tweets whenever you have a coffee
5. Automatically update your Twitter location
The only downside: for those of you not counted as "press" (or prepared to suck up to the developer and get a promo code), it's $3.99. Maybe you can put it on your Starbucks card?
See also: 9 Must See Sites For Coffee Addicts