Exactly. Without Y axis it could have just as well dropped 1%. It seems to be a screenshot from google trends though, so it starts at 0 - http://www.google.com

Exactly. Without Y axis it could have just as well dropped 1%. It seems to be a screenshot from google trends though, so it starts at 0 - http://www.google.com/trends/explore#q=foursquare http://www.google.com/trends/explore#q=foursquare