"So you know Reddit, right? Okay, so there was this subreddit about a lefty podcast that became a general hangout space for leftists on Reddit. Then it got banned (sees a skeptical look), but not for anything bad; people just kept posting about killing slave owners. Anyway, so then a bunch of people from the subreddit made their own website using this open source software where anyone can hos their own instance. And then the instances can federate with each other so that they can see each other's posts, but we were using an early version of the software so we couldn't do that until recently. So uh, yeah, I post on there. That's where I post."

This is probably slightly condensed actually.