So far I only ever hear about clubhouse on hn. Though I'm not really on social media much. I just checked the about page and it actually sounds like a neat idea - voice based chat forums, where new people have to listen for a bit and be given permission to talk from those already talking. Doesn't sound like it's about gaining likes or showing off or inanely talking about yourself. I don't know if it's any good or if the world needs yet another social media platform but it sounds more suited to genuine conversation than quite a few of the current big social media services.