That is a dangerous road. Today they might be taking down otherwise legal content with which advertisers do not want to be associated. Tomorrow they are being asked to remove content with which advertisers disagree. Suddenly my 1000-word rant on the evils of Microsoft's latest OS is being taken down. Rather than being a free space for discussion, reddit will have become just another moderated online forum where nothing of note ever happens.
Reddit's power comes from negative posts. Facebook and twitter makes headlines when people 'like' things a billion times. They lack the capacity for users to express anger objectively. Reddit makes headlines when it empowers 50,000 gamers to dump on EA. Advertisers like EA should be be paying for such feedback. They evidently already listen to it.