If you don't want your children reading inappropriate reading material on the internet, you should monitor what they do and when they do it. You shouldn't go after an entire site that has little to no control over what happens on it or the rest of the internet and you certainly cannot blame one site that cannot control the people that sign up for it. There are warnings, moderaters, staff that look out for inappropriate content on the daily and that is all that can be done at the moment. Don't generalize an entire website for the poor actions of a small handful of people thanks.