>>>Just to be clear, I want to UNsubscribe to the Reliion forum, not add it. I still don't get it.
>>
>>Category filter means filtering the category. So, once added, it will no longer appear.
>
>Not true in my case. Sports, religion, politics, etc. are in my list, yet they appear daily. Something is broken.

At some point Category filters used to be PUTM only feature. I am not sure if that's still the case as I see them in regular options.