We are building a directory based on ODp data. However we are moving a lot of categories around, scrapping some, and creating others to make it better than the mess it currently is. Also all submissions will be through us as it is only the data we are using, not a script that dynamically cals data from the ODp.
The ODp is a great resource but it is seriously flawed (for reason best not gone into)
But mainly poor/biased/no editors and thouusands of dead links.