Changes to the way Mojang identify our accounts.
Mojang are going to be changing the way they identify our accounts in Minecraft 1.8.
Instead of using the username as a unique identifier, they will start using a "UUID" (something that looks like this: 069a79f4-44e9-4726-a5be-fca90e38aaf5). This will make it possible for a player to change their username (to any username not already taken).
Remember, (until many important plugins update) your username means: all your region/chest/etc protections, permissions (VIP/Exp/Mod/GM status), inventory/enderchest items, economy stats (your /money), all your SignShops, pretty much everything.
To secure your username for Minecraft 1.8, migrate your Minecraft account to a Mojang account as soon as possible, if you haven't done so already. -Migrate your account to Mojang-
-Read this for more info-
Instead of using the username as a unique identifier, they will start using a "UUID" (something that looks like this: 069a79f4-44e9-4726-a5be-fca90e38aaf5). This will make it possible for a player to change their username (to any username not already taken).
Remember, (until many important plugins update) your username means: all your region/chest/etc protections, permissions (VIP/Exp/Mod/GM status), inventory/enderchest items, economy stats (your /money), all your SignShops, pretty much everything.
To secure your username for Minecraft 1.8, migrate your Minecraft account to a Mojang account as soon as possible, if you haven't done so already. -Migrate your account to Mojang-
-Read this for more info-