Over on Tech Soapbox, Ahmed has a short post up about the best keyword research source that no one talks about. The site is Delicious, and it is useful for more than just bookmarking your sites.
Example: iBegin Source. I can immediately see what people associate the site with. Notice how no one mentions ‘yellow’ for localeze, but mentioned multiple times for Amacai.
So – thats my little secret of the day. Doing keyword research? See how your competitors are being tagged. And the tag cloud sums it up nicely for you.
Check out his full post for links in his example, and good luck with your research.