What is World of Warcraft?
World of Warcraft(wow gold) is a massively multiplayer online role-playing game (MMORPG). In World of Warcraft, thousands of players adventure together in an enormous, persistent game world, forming friendships, slaying monsters, and engaging in epic quests that can span days or weeks.

What is an NPC?
NPC stands for "Non-Player Character." Computer-controlled characters, such as questgivers, vendors, guards, bankers, and trainers are all considered NPCs. NPCs are either neutral, meaning both factions can interact with them, or they have a faction affiliation to the Horde or Alliance. WoW Gold is the most valuable form of currency in World of Warcraft. It is used to buy and sell items from vendors or other players.

Some other realms seem to meet the criteria, but mine does not. Why?

Blizzard monitors numerous factors contributing to individual realm availability. While two realms may appear to be the same from a playability perspective, there may be some technical reasons why we are unable to implement transfers to certain realms at certain times.( wow gold )

Blizzard's goal is always to allow you the widest selection of destinations and to ultimately get you where you want to be. Part of this process means we must ensure the stability of all realms along the way.

Why isn't World of Warcraft wow gold free?
The fee is used to support the costs associated with the high-quality levels of service, support, and ongoing content creation that go into World of Warcraft.

Can you attack NPCs?
You cannot attack NPCs and shopkeepers in your own faction. However, you can attack NPCs and shopkeepers from the opposing side, as well as some neutral NPCs. Many neutral NPCs are affiliated with a Particular reputation, such as the Argent Dawn NPCs. You must be "at war" with a group (found in the Reputations tab of your character sheet) Buy wow gold in order to attack their NPCs.