Google Trends

Google Trends is a tool provided by Google that shows the popularity of a given term relative to the term’s total popularity in a region, or over a period of time.  For search marketers, you can use this to help with keyword research by discovering valuable insights about targeted keywords.  For instance, if you were researching the keyword “blue moon” in order to run an ad campaign for the beer company, then you would be interested to see that a significant number of searches coincide with actual blue moons, which means that many of those searchers are probably not potential customers.  See image below of this example:

blue moon keyword volume peak