I am an avid user of Stack Overflow and other Stack Exchange websites. I have noticed that some of the Gravatars used by members which were x-rated, get displayed. Why does the Stack Exchange community allow users to keep x-rated Gravatars? Why can't we filter the X-rated Gravatars for the members?
It has already been mentioned by ceejayoz in his answer to this question and my query is why can't we block the x-rated Gravatars here? There are many budding programmers under 18 visiting this site regularly.