beermapping.com has added a proximity search to their cool beer mapping project. When you find a location they have listed, you'll see links to find other places with 1, 5, or 10 miles of that location. As they note on their blog post, this would be handy for planning a pub crawl. For those of you that like playing with querystrings (and you know who you are), you can choose any radius you'd like.
That's what using a 10 mile radius from Orlando Brewing looks like. It looks like those of us in Orlando need to get to adding places to the map. I can think of two beer stores and a couple beer bars that should be in that radius and aren't.