This is a community maintained page and does not represent official World of Warcraft history or occurrences. Information and events here are for community documentation of server particulars, history, or opinion.
Shadowmoon was one of the original launch servers. Shadowmoon held the third highest concentration of Russian-speaking players amongst all the European realms.
Shadowmoon, along with three other realms that were predominantly populated by Russian players (Molten Core, Warsong and Stonemaul), was closed down shortly after Wrath of the Lich King was officially launched in Europe. Free migrations to the realms of the newly opened Russian server group were offered to the population of the server; those who chose to stay, however, were offered free transfers to chosen European realms. The servers were shut down and are most likely used for the new realms that opened with the launch of the second expansion. It's also worth noticing that it was an unprecedented event - since the launch of the original game not a single realm has ever been closed down before.