Heat map produced from geo-tagged uploaded Panoramio photos. I've said before places are "sacred" or loved when they have many photos.
Is there much we can glean from Europe registering so hot? Maybe. Having a combination of tech savvy users and interesting places can't be a bad omen for the future, I don't care what problems the Euro is having. Those are temporary. Of course, so are all the wars the Euro zone has had over the centuries.
Perhaps even more fascinating are the locals vs tourists maps. Here's a game of guess the city for you. I'll buy you a beer or 12. Pick out every one. Dallas is one of them. Except you have to promise not to look at the html code. On you honor.
Blue = Locals. Red = Touristas.