Unfortunately, this guy severely misunderstands how GPL works. >In simple words, this license says the following: use the code to do whatever you want, without

Unfortunately, this guy severely misunderstands how GPL works. >In simple words, this license says the following: use the code to do whatever you want, without paying anything, as long as any modification to the original code is also released under the same license. Basically, the license of these projects requires those who use them to publish any changes to the public. This is not how GPL (2.0 as used by the projects being discussed here) works. There is no obligation to share source code of software that only runs on your server. >The open source philosophy is clear: you can use that code for free, provided that any modification of it MUST be made public. This is not how "open source philosophy" works. He is confusing GPL with AGPL, which would indeed mandate server operators to share their source code with any player that asks for it.