Use OpenStreetmap for maps (even allow the user to choose from list of map services)
User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:220.127.116.11) Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; de; rv:18.104.22.168) Gecko/20091121 Lightning/1.0pre Thunderbird/3.0
Currently Thunderbird uses Google maps. I think it would be nicer to use the open OpenStreetmap project.
Steps to Reproduce:
if you click on "display on map" ...
your are lead to Google Maps
Land at OpenStreetMap based project.
Maybe OSM is not yet at the point where it makes sense to link to it, but I wanted to create that feature request to track the progress to get there. What is missing to use it?