I have never heard of a MensRight forum other than r/MensRights. I know there are MensRights blogs which might reach out to thousands, but they are not a hub of discussion and correction (I think).

And if we are the biggest (by far?) group, do we represent Mens Rights Advocates? I often say with religion (for example) it is the loudest group (fundies) which represent the religion as they have the social and political power. But on here, we all have an equal voice on this little subreddit...