PornBox.com

I see in the setting we can change the version :
- only girls
- general porn
- porn world
- anal porn
- wet porn
and so one

My question is whats the point of this what does it do.. when I select them and refresh it doesnt seem to do anything at all

what is general porn and porn world ?

I want to be able to see every scene and not hide anything which one should I use