Newspaper taxonomy best practices

As newspapers, we are taxonomy nuts. Surprisingly, there isn't any documented best practices for how to form and use a taxonomy tree.

I am in the early phase of deciding on a main taxonomy tree for 6 newspapers and would be very interested in knowing how others run things.

Some questions:

• Did your main taxonomy start from a pre-made tree? Associated Press offers one but are there others?

• Do you include geographical information (State, Region, City) in your main taxonomy tree or do you rely on a set of address fields.

• Do you include taxonomy terms for describing the writing style of an article? For example, 'News' for factual content and 'Opinion' for opinionated content. Surprisingly, AP's tree did not include this which is why I ask.

Thanks!