I think this has already been answered / addressed by Boonex:

by unoboonex

Investigated. The situation has been duly managed and VictorT has done everything just right. The only problem I see is that we should've had wider discussion to make sure nobody is left puzzled.

As for the modder in question or anybody else - we try to keep working and maintain good relationship, even if mistakes were made. Everyone has a chance to fix their wrongs and we're happy to let this happen.

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There see more is nothing here I have on unity that violates any rules etc. As for any other sites like ours, this should not concern you, there are no legal copyrights on any support sites preventing us to post others dolphin tuturials. They ARE NOT copywritten and free on the web.
Anyone can place simple text on an site: copyright stamp on the site, under creative commons, come on... these are Not a legal Creative Commons copyright.

If he following board members of Creative Commons indeed agree with you, Sure I will remove it:
Hal Abelson, Glenn Otis Brown, Michael W. Carroll, Caterina Fake, Davis Guggenheim, Joi Ito, Lawrence Lessig, Laurie Racine, Eric Saltzman, Molly Shaffer Van Houweling, Jimmy Wales, and Esther Wojcicki