World of Warcraft is a subscription based fantasy MMORPG by renowned developer, Blizzard. Recently the folks over at Blizzard announced that with patch 5.4 they will be merging player populations, though not through a traditional server merger.
“Some players also feel strong ties to their realm’s name or history, and we don’t want to erase that.”
Selected servers will become connected servers, joining the core features of two realms together such as the auction house, guilds, group finders, and PvP. Players will be able to enjoy a larger population without leaving the server they have come to call home.