On 08/07/12 19:21, Seth Woodworth wrote:
The argument you are making are focused on copyright,
but when you are
more specific, you seem to be desiring attribution, and want to ensure
that that attribution is legally enforceable. Please forgive me if I am
putting words in your mouth.
--Seth
The fact is, it isn't that important that Wikimedia Commons gets
convinced that it's new copyright. A US-based company could ignore the
CC-BY tag and happily reuse it violating the license, and you would have
to assert your copyright (in order to enforce the license) in the court.