The owner of kiwifarms hosted illegal animal rape porn for around 7 years:
https://www.onionfarms.com/threads/zoosadist-content-hosted-on-kiwi-farms.4459/


He's basically said he lets users cowtip when he thinks he will get away with it.
https://www.onionfarms.com/threads/null-openly-engaging-in-cow-tipping.4550/