We attempt to utilise the concept of an economic community to build a registry of businesses all over the world. Primarily, we are interested in businesses that accept Bitcoin. But all businesses can be included, we will simply build tools to filter for such specifics over time.
The concept of the 'economic community' involves users paying a microtransaction to make a listing, and paying a microtransaction to downvote an invalid or inaccurate listing. This serves to keep the information as honest as possible. Further it provides excellent incentive for miners to keep mining. The more apps we can build that work off micro txs the better.
The app uses the MAP protocol involving key/value pairs but also brings in a tallying on votes approach. The code is open source, and you may freely reuse on your own site