Hmm, I really don't know how to help. I did just inquire into something not specifically related but might be randomly useful. There's a company called DeepDat

Hmm, I really don't know how to help. I did just inquire into something not specifically related but might be randomly useful. There's a company called DeepData @ http://www.deepdata.com http://www.deepdata.com which might be of some use? They have APIs for business listing queries, and may be able to help on some categorizations.