Jealousy.

   Jealousy. It's something that from my experience is pretty big problem in the horse world. Then again, don't you have jealousy in any competitive sport?
  People express jealousy in many ways. It's never fun when your'e the one they are jealous of though. A lot of times you get "hate mail." Other times something stolen or taken from you, and sometimes something as simple as a friend removal off a social networking site. Bottom line is, jealousy causes all those problems.
  Anyways, this is just a little note to anyone who may be reading that when you get hated on, it's not necessarily a bad thing! It just means you have something someone else doesn't! Stay strong and don't give up!