Blizzard opened up the floor to questions on the forums and were promptly flooded like crazy.  The answers are now starting to come in and the thread is a great way to learn more about the lore of World of Warcraft.

Bornakk!

A couple of my personal favorites:

• Q: Are Mimir and Mimiron supposed to be the same entity, or are they relatives?
  A: Same entity, though only his close friends are allowed to call him Mimir.

• Q: What happened to Algalon after Ulduar? It didn’t seem like he was just going to go back to business-as-usual.
  A: As shown in the World of Warcraft Special #1 comic, Algalon is currently monitoring the activities of the mortal races of Azeroth. His outlook on life and the titans’ plans has been called into question, so he seeks to understand what makes Azeroth so different from the countless worlds he has observed before.

You can find the complete thread here