CathInfo is as close to social media as I come. Yes, I guess I scroll through the most recent post titles to see what’s there. Occasionally, I start a thread. What’s listed is the same for everyone. I don’t think Matthew customizes it for each member.  That way, I choose what to read. 
My only “suggested for you” are from YouTube. Sometimes they’ll suggest something of interest to me. As for getting it way off, like porn, celebrity gossip, or gaming, that almost never occurs. I get a lot of suggestions for videos I’ve already seen. People repost docuмentaries as if new, but they’re not. 
When it comes to internet searches, I much prefer the old internet of the late 90’s-early 00’s.