These are often the brokers who pay posters for “recommendations” in forums.
Beware specially of new members who say “Top broker, they are great”.
I know nothing about Invidia. But I joined Babypips three weeks ago and already I noticed three different (bad) brokers here who are posting actively, and in the past these three all suggested through another site to offer to pay me to “recommend” them in forums like this. It’s a difficult problem for forums but not the fault of the forums.