[OSM-talk] Dual/Multiple licencing

[John Smith]

2009/12/14 Peter Childs <pchilds at bcs.org>:
> CCbySA says you must attribute where it came from, ODbl make no such
> demand. So by following ODbl you break CCbySA..... and the law is
> about black and white not shades of grey.

CC-BY is attributation, CC-BY-SA is attributation + sharing changes
under the same license.

>From what I've been told so far CC-BY and ODBL can be happy bed
fellows, but the share alike restriction on CC-BY-SA means it and ODBL
can't be friends.