Use the Google External Keyword Tool to gauge the market demand and to get an estimate of the advertising cost and competition. Keep in mind that the cost per click estimates are not always accurate and you may end up paying a lot less per click. The Google keyword tool is a great starting point for building your keyword list and the synonym tool will help spark a few ideas to broaden your list of keywords. For more information on how you can be successful using the secret cash method go to: http://www.SecretCashBlueprintTips.com