There are servers for World of Warcraft in quite a few cities in quite a few countries. However, there appears to be little available (officially, via Blue posts, or Dev blogs) as to where they are. There is information gathered from other websites that suggest where, however this information appears quite old, and not official.
Technically, private servers are illegal for World of Warcraft. Nevertheless, many people still play on private servers.
No, only on private servers
World of Warcraft is made by Blizzard Entertainment. They are the ones that host the official servers that people play on.
of cource they are...well 99% of them
One can find a complete list of Word of Warcraft servers, on the online site called "Wowwiki". The list includes servers from all over the world including the United States, Canada, and Europe.
By visiting the homepage for World of Warcraft we can visit a page that shows all of the names of the servers. Here it is also able to see not only the type, population, and location of the servers but also whether or not they are available to play on.
This is what I'm currently downloading. http://www.antwow.com/ Games in this include, World of Warcraft1.2GB) World of Warcraft: Burning Crusade(4.6GB) World of Warcraft: Wrath of the Linch King (15GB)
Unfortunately, yes there are people who run private servers for world of warcraft. Keep in mind that these servers could be several patches behind the live official servers, and the Game-Masters of these servers follow no rules unlike the official servers. The economy of the private servers is nearly non-existent because of the amount of people on them compared to the official servers.
There are no GM power hacks on retail (legal) servers. There might be on private servers, but private servers are illegal. We can not help you with that here.
Private servers are... well... private. It depends on what the administrator of the server allows.
Priivate servers are ilegal, i would suggest keeping away from them.
Private servers are known to be buggy as heck. It is better to just play on the live official servers.