[Blikkentrekker]

Most boards on 4chan are designated safe for work and racism free, and will quickly earn one a global three day ban for posting pornography and gore.

This is very strictly enforced in practice, one doesn't see any nudity or gore remain up on those boards for more than ten minutes before a janitor catches it.

Pornography is allowed on all boards that aren't designated “safe for work”, but gore is only allowed on a very select few.

[ineedasername]

Vitriolic hate speech seems to be allowed just about everywhere. Browsing through the first three items in Technology /g/ showed me 2 instances of homophobic and 2 instances of racism. One of them hit both at the same time with "faggot [n-word]".

In general I have much less of a problem with porn or gore than I do with raging hatred.