@Cupcake I think the broader idea of shaming, ultimately, isn't so much what this place is about. It is a factor -- or it is in the cases of people capable of experiencing it, but as mentioned... that's not really everybody, so it's not terribly effective.
Generally, just telling someone 'hey, you're doing a crappy thing, here's why' is going to work just as well if someone is the kind of someone disinclined to doing crappy things.
More often, people just justify it, try to turn things around into 'look at how I am being victimized oh noes handwring (sometimes out of an attempt to dodge blame, and sometimes because they have the self-awareness of the average turnip and zero desire to examine their own behavior ever or question their rightness)', or already know they're doing something crappy and don't care. Totally useless in such cases.
The only time traditional shaming works in these cases is if they're trying to keep it a secret -- and that's ultimately more a case of exposing the truth in most cases I've seen rather than trying to humiliate someone.
In that last case, I think the boards have traditionally been useful. There are a lot of people who will talk a good game, and are charismatic enough to play spin doctor or manipulate any given situation enough to get away with murder for ages -- until someone posts a log, or enough people who have encountered the same thing in multiple places all come forward at once and a fuller picture can be seen.
That experience may humiliate someone in the process -- but it doesn't tend to be the real goal.