I didn't fix much in Montréal, but I did a little while there for WorldCon.org .

My hotel's street wasn't on the map, had to add that! Plus I named Place d'Youville and added Rue Normand, and some osm.wiki/Tag:Historical=. May do a bit more as i sift thru my photos.

I very much enjoyed having the CloudMade QA map on my Garmin while there.
Having the GPS report km and kph while the engine was reporting mph & mpg was a nice flexible use of technology.