http://www.equestriadaily.com/
The ultimate source of My Little Pony: Friendship is Magic news and fanwan-....I mean, fanwork.
They provide links to fanfiction works, a disconcertingly high percentage of them involving Equestria being subsumed in a nuclear holocaust, cancer, murder, and homoerotic situations (apparently called 'clopflic').
It's one thing to write silly wank fanfiction of a children's show, but it's quite another to write a chilling, dead-serious accounts of homicide, Apocalypses, and disease of said show. Thank you, Internet.