We’ve been obsessed with the beautiful data visualization maps that Eric Fischer creates for quite some time now. In his latest series, See something or say something, Fischer looks at geotagged Flickr photos and tweets, and as always, the resulting images are both surprisingly illuminating and pretty to look at. “Red dots are locations of Flickr pictures,” he explains. “Blue dots are locations of Twitter tweets. White dots are locations that have been posted to both.” Click through to check out a few from his collection, and if you like what you see, find the entire set here.