A keyword reporting tool, HitTail allows you to view keyword referrals to your web pages in real time. Additionally, HitTail has a suggestion and to do section which allows you to select and identify long tail keywords to target further within the search engines.

Mike Levin - Founder of HitTail
HitTail basically just analyzes your entire long tail keyword list and pulls out the ones where it thinks you can make the most ground in the least amount of time.

In other words, take a suggestion, write about it in a blog post or optimized page, and go from X-pages in (which you were previously) to the first page or two.

More comments from the forum
It's gold ... very impressive ... great tool ... perfect find