I always considered Motherless the “4chan” of porn. Not only because Motherless was somewhat popularized there, but because Motherless also encourages users to share their own content in a very open way. This means minimal bullshit like moderation and censorship, and a strong “anything goes” attitude that leads to free and extreme content. It encourages people to create and upload their own homegrown content, like videos of their girlfriend pissing or spy cam videos of their cousin. Unfortunately, this also meant a lot of questionable content.
Motherless.com has toned down a lot since back then. You’ll be much more hard-pressed to find illegal shit there now, and the site now mostly consists of interesting or weird content that can sometimes just leave you fucking confused. Luckily, it also has an outstanding amateurs section with some hot ass babes and tight ass pussies as well.