How about every changeset triggers a message to the last n people to edit any of the nodes or ways in the changeset, together with the comment for that changeset?
Every mapper will get a message like this: Some of your contributions have been edited in changeset XXXXXX. The comment was "XXXXX..." A mapper can choose to subscribe or unsubscribe to this feature, or maybe specify that they are only interested in messages arising from work they contributed in a certain area. Then, a mapper can go and check that the changes are good, or have ruined/damaged some good work. I myself have had some work ruined, but I only noticed a long time later. At first I thought I had misremembered editing in a certain area, but it turns out that my work had been deleted (history lost) and replaced with an almost identical version (version number starts at 1 again). I am satisfied it was not malicious, and in fact the mapper involved was quite sorry. He had made a mistake and couldn't fix it, but tried to put things back as they were as best he could. If I had known about it sooner I could have helped. I suppose it's a bit like OWL, but tailored to an individual's edits, not to any edit. Yes, it would lead to lots of messages, but I personally would have no trouble filtering them. Best wishes, Andrew _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk