"This is because Wikipedia was created before CC came
on the scene, and therefore – quite reasonably – used
the best existing open content licence, the GNU Free Documentation
Licence (FDL), which is not compatible with popular CC licences. As
the man who did more than anyone to craft the latter, Larry Lessig,
""A fundamental flaw in the Free Culture Movement to date is
that its most important element -- Wikipedia -- is licensed in a
way that makes it incompatible with an enormous range of other
content in the Free Culture Movement. One solution to this, of
course, would be for everything to move to the FDL. ""But that
license was crafted initially for manuals...""
Some of the products that appear on this site are from companies from which QuinStreet receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. QuinStreet does not include all companies or all types of products available in the marketplace.