OpenStreetMap
For all of you not knowing this great service, I want to introduce it to you:
It's a map showing a bunch of different errors like intersections without junctions, almost-junctions (with unconnected ways), points of interest without name, non-closed areas and much more. All these error types have a little icon on the map, showing more information when you point your mouse at it. Links to edit these errors with JOSM and Potlatch are embedded for your pleasure.
The area coverd by these checks is currently Europe.
And here is the link: http://keepright.ipax.at/report_map.php
Discussion
Comment from chillly on 7 March 2009 at 20:36
Beautiful tool. The area I have mapped had a number of little glitches that I would probably never have found. Highly recommended.
Comment from MacDude72 on 8 March 2009 at 00:05
That's cool! Let me know when North America (or, at least, Chicago Illinois) is covered. Although, right now, I imagine there would be more errors than correct ways!
Comment from es_ka on 8 March 2009 at 00:34
MacDude72,
I can't tell you because I'm not the author of this fantastic tool. It seems that a guy from Vienna/Austria created it, but I couldn't even find his name on his website. I just wanted to tell the community about it, because I was really fascinated when I found it a few days ago...
Comment from wieland on 8 March 2009 at 21:02
you can reach him as keepright having a mailbox at gmx.at
See impressum in http://keepright.ipax.at/ at the end.