46 at present. Furry porn sites that weren’t tagged NSFW, memes, shitposting, a number of communities from the h… server (you know the one), tankie communities.
I’m subscribed to a lot of communities, too, but I still use the all feed for discovery.
Ubuntu 9.04, because of WUBI (anyone remember that?). Unstable as hell, but allowed you to run a near bare metal Linux install without the hassle of setting up dual-booting and a separate partition. Liked Ubuntu it so much that I soon replaced Windows completely. Currently running Debian, so I haven’t strayed far from the family.