google and adult related terms, whats up with that.
 

the clear porn keywords still show primarily adult sites, like 'porn videos', 'lesbian sex', anything that's clearly porn related.
But lets take the keyword 'cunt'. What happened to the porn site results on this one? Anyone have an explanation for this policy feel free to share.

Well,cunt kind a sound more like insult word then porn word.Noticed same thing on some other keywords too.

Its because its not implied that people are searching for porn.
They might be searching for jokes with the word cunt or anything else, so general terms won't display porn results.

it used to have porn results and normal results though. Page 1 always about 7 porn and 3 non porn. Now they filtered out porn completely, ive only spotted 1 adult page in the first 5 pages (pornhub, ofcourse).

Also,i remember there was a case once where on keyword pussy all porn keywords was replaced by mainstream,but that didn't took long.

they just value different types of sites now. nothing to do with adult terms.

google getting smarter and realize when people search for the word "cunt", they probably aren't looking for porn.

Add sexy to the search term and the porn appears.

I still see mostly porn sites when searching for "porn". Maybe you have some filters enabled ?
That will eventually have to change though because, again, its too general.