The most competitive keywords are a real fight to place with and yet most searchers will use alternative keyword searches and those are what you can target with Keyword Tools.
Not only will you have an increase in traffic you’ll have traffic that you would not normally get but that is certainly a fit for your niche.
If you want to increase your traffic, you need to be able to bring new visitors to your site. If you continue to use only the keywords or keyword phrases that you always use, then you will only see a slower smaller growth of your traffic.
However, if you choose to look at other related keyboards and expand on your keywords or keyword phrases then you have the opportunity to see your free traffic consistently grow and expand.