Yep, though it wasn’t quite “closed” since people were after see comments from friends of friends.
I had several real professional friendships start this way, and quite a few others that I followed just to see the thoughts/opinions of people in different life stages & life styles. It was a very different vibe from other “social” sites even then, and I haven’t found anywhere else that had ability to have conversations about a large breadth of topics while also going deep into them if one wanted.
It had a BarCamp kind of feel to me, more like the discussions that happen at a party with a lot of people who are confident in themselves but aren’t looking to prove it to other attendees.
Note that this is almost certainly some bit of romanticizing, and the communities would of course have a lot of variance but mine was dope. Fashion designers, artists, historians, a couple chefs, computer scientists, theologians, and others came together for great conversations and lots of perspectives.