When asked by a player in the same thread why Blizzard was reviewing user-made maps for StarCraft II when they didn't do so for the original game, community manager "Bashiok" stated, "Because we can. Literally. We have a support department now of size and ability to enforce these types of things. It simply wasn't possible when our in-game support used to consist of approximately 20 technical support agents." In yet another post he stated, "We're working on improving our processes to ensure the map maker has more information on why their map was removed, right now it is a bit vague and has obviously led to this misunderstanding."
Blizzard's policies on inappropriate content in StarCraft II can be found on this support web page. In summary, it states, "Any content found to be offensive in nature has no place on Battle.net. Such content can be changed or removed, and the publisher warned or suspended."
Gallery: StarCraft 2 Screenshots