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: Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; de; rv: 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. Reproducible: Always Steps to Reproduce: if you click on "display on map" ... Actual Results: your are lead to Google Maps Expected Results: 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?