Google's New Keyword Tool

Google has added a great new keyword search tool that looks at your website, and gives keyword recommendations based on your site content:

New tool in beta form: http://www.google.com/sktool

The great thing about this tool is that it only recommends keywords that you don't already have in your AdWords campaign. This way you can easily add them, and start tracking their effectiveness.

Google's original keyword tool is probably still more valuable, but I recommend trying both out.

Original keyword tool: https://adwords.google.com/select/KeywordToolExternal