This is a seed for herobrine, I have tried it and it works (may scare people when he strikes) the seed is: "jpgaming" just as you see it (without quotation marks) secondly, find an island away from your spawning one, next when you've found the island, find a massive cave in the island. Now go down with or without torches. Go far down (not too far) then mine straight above you until the top block is too far away for you to delete, now use the cobblestone/stone to go up, continue this until you can see the light of the outside. Now this bit may not work... Mine two blocks right, then walk in and jump. I was teleported out of the map and was dying, I could see trees in a cave, burning down, I think herobrine is trying to destroy my world as I write.