Are you looking for more qualified keyword ideas? Try the new Search-Based Keyword Tool by Google, see a demo here:

It gives you keyword ideas based on your website content and its based on actual Google search queries.

In case you advertise through Adwords, using this new keyword research tool is a must. The interface is easier and provides more useful information for your keyword research. The highlight is that it automatically compares the suggested keywords against the keywords being used in your Adwords account.

Take away: You never miss out on targeting any potential keyword that could help you reach your customer search online and you can get more keywords out of your research.