In very simple words, SpyFu is a search marketing software that provides you insights on activities related to SEO, PPC, and keywords. It is the very cost-effectiveness that makes an online marketing campaign a success. This tool may also be used to spy on your competition. In addition, you can find information about organic search usage of keywords; Recognize how keyword use has changed over the past decade. You’ll also get information about the most profitable ads and keywords for both organic and paid searches being used by your competitors.