Nicolas Weeger wrote:
This is an interesting question.
If i remember correctly, GFDL requires to give at least the 5 major contributors. But how we determine that for Wikipedia? Does this notion even has a meaning?
No, you do not remember correctly. The GFDL requires derivative works to give at least the 5 major contributors, unless the creators of the original work release that obligation.
The GFDL makes no requirements on authorship attribution to the original work.
I agree on Anthere's point of view that we should all give up 'ownership' of articles, and simply work together.
It would behoove us (and potential authors of derivative works) if we did explicitly state that we release people from the 5-author obligation.