Google may not be too happy about this, but check out these two new keyword comparisons tools:

http://spyfu.com/
www.KeyCompete.com

The way they collect the data (at least KeyCompete) is that they are constantly doing automated searches on all kinds of keywords to see who is advertising on what keywords.  Since these are done automatically, and by the millions, Google’s servers are made to work and Google gets no benefit.

Both of these are great services, though, that Viewstream uses to help in our competitive and market research. This allows us to better formulate the right language around your brand, and optimize organic and paid search.

More and more, the ability to define keywords and integrate within organic and paid search is one of the most critical aspects of creating competitive differentiation in today’s marketplace. Viewstream tries to extend the value of those keywords to the entire, integrated brand message.