Spy Fu is a platform specialized in SEO referencing. It is a tool that helps businesses and marketers optimize their SEO and PPC performance. It is also used to gauge competition, letting companies know the secret marketing formula of top-ranked competitors. Spy Fu also works on keywords. Indeed, the platform allows its users to increase the traffic of their sites by offering them specific keywords. It also offers them the ability to track keyword rankings on various search engines. Due to its effectiveness, the tool has already been used by several world famous brands like Microsoft, Amazon and Adobe.