Recent changes in OpenStreetMap, the simple way.
See http://www.openstreetmap.org/user/lxbarth/diary/19185 for background.
Just git clone and boot up a quick development server.
Slightly modified by tyr_asd to show only the edits of the last week. Not showing older items one may not be interested in helps saving bandwith and rendering time and/or allows lower zoom levels.