[Why I hate most of WoW private servers]

This was a great read! I have to agree that these servers that spend all this time and money on developing working content, then die off in a few years and all that hard work is lost, is a crying shame. 

[Some minimum hardware requirements (cloud and metal)]

Most people who have a larger user base just run a Virtual Computer hosted in a cloud like service such as AWS or one of the many VPS style video game server hosting websites.

Still very cool info.