OpenStreetMap
I'm working out the errors that the JOSM Validator show me at México City, first, nodes near roads and roads not connected, there's lots and lots of them.
I have a lot of patience and are for the long run compromised with OpenStreetMap but I can't see the end of this errors in the near term :-s
Discussion
Comment from z-dude on 6 February 2011 at 01:27
You'll find that it helps to do one type of error at a time and one neighbourhood at a time .. ie, do the 'close nodes' first in a neighbourhood, then do the 'intersections without nodes'.
I found the potlatch link in keepright to be handy.
http://keepright.ipax.at/report_map.php?zoom=12&lat=19.35403&lon=-99.29497&layers=B00T&ch=0,191,270&show_ign=1&show_tmpign=1
Fixing keepright issues is ok for armchair mapping on a rainy day. it helps to have imagery that makes it clear if there's an intersection or not. I think that the misconnected nodes are due to mappers getting tired, or mappers working with a potlatch client that lost it's connection to the server.