Google Keyword Planner is one of the most popular tools used for keyword analysis. It offers large amount of data on the popular search queries typed by searchers all around the world. Apart from the several perks of using this tool, the biggest one is that it is free of cost. Google Keyword Planner is #1 on the list of research tools used by Digital marketers and this piece by YourSEOPick explains the top 5 reasons.