Query logs let by user on search-engines have helped create efficient tools for trend analysis, from commercial use to fore- casting epidemics. In this paper, we propose a new method and system for cultural trends analysis based on Google auto- complete suggestions. We present Zeitgeist Borders, a toolkit enabling any user to collect and analyze associations between queries, suggestions and various regions of the world. We re- port unexpected observations about several behavioural and geographical trends along with promising uses. Paper page : http://hal.inria.fr/hal-00805048 Project page : http://fabelier.org/towards-google-borders/ Newscientist article on the paper : http://www.newscientist.com/blogs/onepercent/2013/04/zeitgeist-borders-google.html