Google have introduced a new tool that helps to extend the data available from Google Trends, whereby users can track and compare the search activity for a number of search terms over time. The new tool, called Insights for Search, is designed primarily for advertisers and provides more information for marketers to understand search behaviour, as well as including some new features like a world 'heat map' to graphically display search volume and regional interest.

Like Google Trends, the new tool enables users to enter a search term and view the search volume patterns over time, back as far as 2004. It also shows top related and rising searches and there's the option to compare search volume trends across multiple search terms, different categories, geographic regions, or specific time ranges. A Google account is required to log in and view the numbers from the graph and to download the data into a spreadsheet.