How Much is Really Appropriate?

Simply browsing around deviantART you'll find it. One cannot even look at the popular collections page without seeing it. Mature content, unmarked and unfiltered. How much can we really put up with?

“Mature content” is supposed to have a tag, and is defined by the help and FAQ as a deviation that “contains material or theme which more sensitive viewers may find to be offensive or upsetting. Common subjects which are considered Mature Content are nudity, excessive violence, blood and gore, sexual themes, strong language, or ideologically sensitive themes. See below for explanations.
Nudity-Fairly self explanatory. If your work contains nudity, displaying a penis, testicle, vagina, breast, nipples, or buttocks you should assign this tag.
Sexual Themes-References to sex or overt sexuality, including sexual based humor. Please be aware that we do not allow the submission of sexually explicit or pornographic content (images, literature or otherwise).
Violence/Gore-This refers to overtly bloody or violent imagery, generally associated with the horror and macabre genres, but could also pertain to photojournalism or written work. This should mainly be applied toward depictions of violence or gore etc, that are portrayed in a "realistic" manner as opposed to the zany or exaggerated cartoon violence.
Strong Language-Profanity, vulgarity, and otherwise coarse or offensive language.
Ideologically Sensitive-If your work may be construed as offensive toward a person or group of people due to a religious, political, social or other belief please assign this tag to it. While deviantART does not allow the submission of hate propaganda or hate art we do recognize that often works motivated for political, religious or other personal beliefs can be seen as offensive by those holding opposing beliefs.

Pornographic and other unacceptably sexual themes continue to be prohibited despite the presence of this tag as are certain other contents which have been judged unacceptable. Information concerning this is covered elsewhere in this FAQ”
Despite the measures our staff has gone to, this sort of material seems to be floating around everywhere without even a mature content tag to keep it from the eyes of those who either do not wish to see it, or who are far too young to be exposed to it. More deviants should be reporting the rampant carelessness towards these guidelines. All anyone would really have to do is briefly explore the collections page. Or search certain words that I'm sure you already know and may remain unsaid.
Basically, I'm tired of accidentally seeing the nether-regions of women when I really would rather not, and there are likely many others who share my thoughts. It is not appropriate for a site that caters to a fair amount of minors.