Well, actually the article from Kotaku
mentions ten, but I feel strongly that ten is a plethora. The video from the DDG guides
covers various commenters questions about what that snake in Gundrak is, what the dwarves dug up in Bael Modan, what happened to Neptulon after he got snatched out of Throne of the Tides, and where Tyr went after he abandoned his Temple in Northrend.
It's pretty neat stuff all told, so go watch it already. Number one is pretty interesting, at least I think so. I go there from time to time via the Stratholme dungeon.