A true Business Directory caters much to, well Business related. For marketing I am now claiming NwParks.net as a Business Directory, but it is more General Directory as the way is laid-out.
To me a business directory would be limited to only those sites that are being used to sell a specific (not via advertising CPA or CPM programs) product or service. A general directory would also include sites to share information (tutorials, articles, etc) and pleasure (hobbies, games/arcade, etc). As I write this I wonder where a directory site falls. It is a business site as it offers advertising space, yet it is more of an informational site in nature.
i think Business just makes it look professional and is used for marketing purposes because most of those are general directories
Good question, I also has the same doubt.. I think, valhalla, britishguy or amitpatel_3001 can answer it ?