Here a link to a nice resume on open streetmap and redent meeting in Belgium by enthusiasts of open source (French) http://linxtek-informatique.eu/blog/conference-la-cartographie-participative-le-projet-openstreetmap/
The WAZE gps driver application is the perfect example of a 2.0 Geography. Interestingly it is on the radar to be sold by Facebook or Google or another with very high figures; Seems that location location location is still the key? And now seems that the deal is confirmed http://allthingsd.com/20130609/this-time-its-real-google-waze-deal-on-the-way/?mod=atd_homepage_carousel I like the following paragraph bvecause it indicaztes the power of the crowdsourcing model: In the grand scheme of mapping software, Waze isn’t a behemoth: The startup boasts 47 million registered users, 32 percent of them active. What’s impressive is how accurate its maps and traffic information are in areas where it has critical mass, because they are constantly updated by users who are running the app as they drive .