Keyword Research Tools
About keyword resarch tools that you can use free as well as some paid keyword tools. The free tools give you good information but it is generally Google related. You can get a lot more out of services like Wordtracker.
But to start, use the first two free tools to get a feel for what you can find. Once you get comfortable, move on up to something else.
A quick and easy research tool to use. It gives you ideas as to what people are most often searching.
This tool gives recommendations for keywords to be used when you are advertising. Use it to see what Adwords suggests as far as popular keywords go.

A free tool that requires you to register to keep out scrapers.
Paid Keyword Search Tools
Most often used by professionals. There is a free version and a free trial.
Keyword Discovery compiles keyword search statistics from all the major search engines world wide, to create the most powerful Keyword Research tool.
Use this to spy on what keywords your competitors are bidding on.
