MOD EDIT: Yes, this is legitimate. DO NOT REPORT THIS STORY.
The ponies and the humans have lived together in harmony for centuries. Equestria is an island inhabited entirely by ponies, and some have branched off to live with humans. However, the humans, seeing their bleak world and accepting that they have made too many mistakes in their world to fix, have decided to open facilities to convert humans into ponies and live in peaceful Equestria.
Yes this is the original and it is used by permission. The original author is Blaze and all credit goes to him.
If you want proof that I am not stealing it check his DA page http://blaze12.deviantart.com/