Can I upload my Minecraft PE world for others to play in?
Solution 1:
Yes, if you purchase Minecraft Realms (https://beta.minecraft.net/en/realms/). When you create a Minecraft Realm, you have the option to use one of your Singleplayer worlds as a Realms base (it will not harm or delete the map in any way). Realms is coming to Pocket soon. UPDATE: Realms is now in pocket!