What kind of categories should I use for an online yellow pages section?

[twells22]

I'm creating an online directory for my home town like yellow pages but I don't know how to categorize the businesses. Should I just pull out my local phone book and use those categories or should I use less, more broad categories?

 

[Xyzer]

Just a small tip if it is for your local area say that you lived somewhere that was known for e.g. cheese, you would definately go into more details about these categorys but you also want like health, transport etc. etc.