For some kind of communities this can help greate in SEO.
With this meta tag Big duplicate content can be removed from domain.
How it can be achieved ?
how to manage data for existing users who did not give consent? We had to remove all of their post?
In my case there are many users that aren't active anymore but wrote a lot of interesting messages. Removing their post would be disastrous.
I'd like to be able to decide what categories users are automatically subscribed to. I know there's a plugin to prevent new users from automatically subscribing to all categories, but I'd prefer a lot more granularity than that.