Dear All,

I have to apologize for that the study link was broken for couple of days. Bugs are already fixed and the study is work well waiting for your contributions. Please, use study http://hccvgi.informatik.uni-bremen.de/ to help science. Our research focuses on YOU (OSM users) and contributors. Participate in the study http://hccvgi.informatik.uni-bremen.de/ to see how perfect you are in recognizing landuse areas.