In the same way you cannot share revenge porn/leaked nudes/leaked homemade porn, you absolutely can't share content you don't have the copyright for.
Don't be a dick in a forum that has industry participants (actors, producers, etc) who make their living from the porn industry. Their participation and fan engagement will always be welcome over you slapping them in the face with links to pirated content, assuming your links don't lead to malware.
If you can reply to this post, don't be surprised if that's short lived as you should expect to be banned.
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