How to Use Google AdWords Keyword Tool in a Way to Get You Hot KeywordsBy Michael Ullman

While the google adwords keyword tool isn't technically free, it only costs $5, which you get as credit to spend on adwords. This will be the best investment you will make for keyword tools. Think about it. Google is the biggest company in the whole world created for giving data to people who are buying keywords. Google wants to give you the most effective real-time keywords so you will continue to use their services. Why would you want to neglect this resource?
Here's how you get the most out of it. First, login to your adwords account, click tools, and then select keyword tool. Search for a broad term in the niche you want to research, and then select "use synonyms" and perform your research. [read more]