https://www.google.com/trends/explore#q=foursquare https://www.google.com/trends/explore#q=foursquare It's a "relative" scale. It's the difference between the

https://www.google.com/trends/explore#q=foursquare https://www.google.com/trends/explore#q=foursquare It's a "relative" scale. It's the difference between the highest point and the lowest point. The highest point being when Obama checked in on Foursquare. The lowest being ,well, when Foursquare started.