What is Google Trends? According to Wikipedia,

Google Trends is a tool from Google Labs that shows the most popularly searched terms from the beginning of 2004 to now.

Google Trends charts how often a particular search term is entered relative the total search volume across various regions of the world, and in various languages. The horizontal axis of the main graph represents time (starting from some time in 2004), and the vertical is how often a term is searched for relative the total number of searches, globally.

So that means if you are a blogger without a niche and wants to be on top of everybody’s searches, this could be it for you,