I agree. As I was thinking about the amount of words in the URL I was looking at our company site that we just redid a few months ago. I didn't have a role in redoing it but I know they went through and paid attention to the URLs when renaming them.

Ex: http://www.advancedaccess.com/productsservices/ (Check the URLs on that page, as the example)

We kept it to three words or less in the file names and have four main categories, or file names. I think it makes sense.