As promised, here are some interesting results of our human-cognitive study after 1 month. The study analyzes how humans are able to describe geographic features in OSM, in particular land-use feature.
Visit the study and participate if you still did not: http://hccvgi.informatik.uni-bremen.de/
Look to some results: http://hccvgi.informatik.uni-bremen.de/reports/index
Enjoy your holidays and Merry Christmas every one.
Dr. Ahmed Loai Ali