Are links to porn sites allowed on a website displaying Adsense? Not porn on the Adsense page itself, but links to potential porn.

I'm not sure if you will be banned from adsense or not,
but anyhow google doesn't like porn,
and your pr will be reduced dramatically.

PR (for what it's worth) will not be affected (reduced or otherwise)

Google doesn't "like" or "dislike" porn.

Porn sites get indexed, they get "ranked" and the pages get shown for the related queries.
Google doesn't care whether you link to porn sites or they link to you.

They've disabled my account for less, so I wouldn't take the chance if you want to keep using adsense.

Not sure about that but to make it safe, you just to avoid liking to porn site if you are using adsense.

I doubt it is allowed. Better not take the chance to jeopardize your adsense account.

It's better to be safe than sorry. So don't waste your time to link on porn sites.

I set up a VBulletin forum once on one of my sites, and I had adsense on it.

A load of spammers/spambots joined the forum and I only checked it every few days.

One of the spammers put a link in his profile to a porn site and I did not see it.

Vbulletin decided to put google ads in the profile as well.

I got a message from Google giving me just 3 days to make changes. Just imagine if I had been on holiday or something!

AdSense publishers are not permitted to place Google ads on pages with adult or mature content. This includes displaying ads on pages that provide links for or drive traffic to adult or mature sites.