The folks behind SEM Rush recently launched SEO Pivot.

SEM Rush does a great job of comparing sites head to head, but is a bit top heavy in the search results (only searching through Google's top 20 search results).SEO Pivot is more for just looking deeper into 1 site at a time, however it does use a smaller keyword database of 500,000 top keywords. It can help you uncover some broad keywords that you rank better than expected for.

Who knew we ranked #97 for price fixing, #98 for invisible hand, or #32 for dark art? The 3 examples I used were more of an attempt at humor than useful data, but we also rank for other valuable phrases.

Between this tool and SEM Rush I still like SEM Rush way more, but this is another useful tool to add to the toolbox. Look at deeper search rankings for such broad keywords...

• can help give you a good idea of how strong a particular site is
• help you see the unlocked ranking potential of a site that is currently poorly optimized
• perhaps can help you rethink making some site structural changes like promoting some pages a bit harder in your link structure and/or using internal 301 redirects to combine some related pages