List at the top

Let's say If someone was launching a site industry specific . How would one go about determining, on the keyword research side, how big (or small) the "tail" of the search terms in that industry are?

looking to measure the value of being listed in the top for a few, hig volume search terms in the head vs. the value of having rankings for the thousands of smaller terms making up the tail. Other than simply using intuition and logic, one can't seem to think of a good way to do it.

thanks

Hi,

To approach an "industry," I'd want to get a look at what works for that industry's longer standing niche publications. What concerns re-surface regularly? Are they adequately addressed? Would these concerns be of more interest to customers or colleagues?

Would it be helpful to look at how a customer hears about and chooses who to hire or buy from?
sudhanuj
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