Updated Adwords Keyword Tool
Have you seen the new updates to the Adwords Keyword tool? (https://adwords.google.com/select/KeywordToolExternal)
Below is a snapshot of what google is showing now when you search for Keywords
I did a search for "security software" and these are some of the results. Prior to the changes to the tool, you would only see a little bar that said low search volume or high search volume. Now as you can see you are getting actual numbers. This keyword tool is a great place to start if you are trying to determine which keywords to focus on.
Pretty soon I'm not even going need to have a subscription to those expensive keyword tools :)