Nope, EQD is not affiliated with Hasbro at all, and was actually made by some of the first Bronies who moved off 4chan's /b/ and /co/ when the bannings started because ponies were being spammed.
Staff page:
http://www.equestriadaily.com/2011/08/authors-and-pre-reader-page.html
And Wikipedia's article, which actually meantions EQD
http://en.wikipedia.org/wiki/My_Little_Pony:_Friendship_Is_Magic_fandom#Creation_and_spread