My personal view is that I want the data I contribute to continue to be available and of use, even if the worst were to happen, and OSM were to disappear, so I opted for PD. Yes, some people might then try and sell it, but there's more chance others will continue to provide it for free so they will be less successful at this.
OpenStreetMap
Discussion
Comment from Olli17 on 25 November 2010 at 13:54
It was an mistake you did. OSM should be under cc-by-sa and not under this new licence.
Comment from Zartbitter on 25 November 2010 at 16:39
it is not up to others to judge on hackery's decision.
Comment from Komяpa on 26 November 2010 at 07:15
Olli17, any better arguments than "should be"?
Comment from c2r on 28 November 2010 at 09:53
My personal view is that I want the data I contribute to continue to be available and of use, even if the worst were to happen, and OSM were to disappear, so I opted for PD. Yes, some people might then try and sell it, but there's more chance others will continue to provide it for free so they will be less successful at this.