SO WHAT IS THE POINT?
You join a site which could be dodgy.Why?
You want to post something on a site or keep a blog and don’t want a drama.
You find some writing site which lets you post items with no short word limit and use it as a blog.
You post on the site, then link to Twitter or Facebook or wherever, using the site.
That they don’t pay you is not the main issue. The main issue is that you want to give your outlook on a topic.