A couple additional notes: 1. Many (most?) of the servers running with Bukkit also had some form of payment for items, skills, ranks, etc. that can affect game

A couple additional notes: 1. Many (most?) of the servers running with Bukkit also had some form of payment for items, skills, ranks, etc. that can affect game play, also known as "pay-to-win." Mojang recently announced that they were going to be cracking down on this since it's a violation of the license, though I don't know what if any enforcement has actually happened. Enforcement was due to start August 1. 2. Mojang has a couple of multiplayer options without Bukkit - the Minecraft Server piece that is part of this discussion and Minecraft Realms. If Bukkit is dead (which may be the case no matter what happens because W. is not the only outside developer who could pull this kind of stunt), there are still multiplayer options and Mojang could likely implement some of the features currently in Bukkit but under their control - perhaps under a licensing model that lets them sell the server software as well. Basically this guy has managed to shut down something being used by folks with business practices that Mojang was already having some issues with, while leaving available some less feature-rich options fully approved (and controlled by) Mojang. The odds of that resulting in their giving in and open-sourcing something that's included in Minecraft as a whole are somewhere around nil - worst case for Mojang is that the Minecraft server community that they're not a direct part of takes a feature and popularity hit for some time while they get to point at this guy as the reason why.