Kat Hunter dropped by and left a comment about the Warcraft 4 affair in the comments section here.
I can confirm it was indeed her (if the Blogspot account didn't give it away) as she also sent it from a Blizzard work PC.
She came here from the Reddit post if you were interested. I wonder if Mike Morhaime reads Reddit often too?
Still, it's nice that someone from Blizzard finally left a comment after all of their visits. I think it's the first time they ever commented.. I don't have access to the older blog information before August though.