The title says it all. MMO-Champion, at the request of Blizzard, has removed all Cataclysm alpha content from their site. Boubouille posted a note on the main page saying that it'll all be back after the NDA is lifted. He and his moderators are also banning anyone who posts screenshots or links to client downloads/servers. We have previously talked about what an NDA means and how it can be enforced.
Since WoW.com has not been hosting any alpha content, this will not affect our site.