Well, the lighter text does punish the original poster, indirectly. It lowers the likelihood of engagement by an audience and I like that subtle approach more than heavy-handed alert warnings. Sites that have that kind of approach feel like I'm in the principal's office and being scolded for no good reason. Subtle encouragement to do other types of behavior feels more like I'm in a hippie montessori school instead - we're not going to come down with the stick if you behave a certain way, but we're not going to give you the carrot unless you do better.