Steam

Not new, but they're great if you enjoy profile customization, more emoticons/stickers, or Steam Deck stuff (keyboard themes and startup movies).

A lot of people are unfamiliar with a LOT of features that Steam offers. It's a very robust PC gaming social network (complete with a "status" sort of activity feed), player-run groups with Discord-like group chats and themed review curators, full market of trading cards and gems that can be sold for a few cents of credit or traded to make badges, a leveling system that unlocks more features and profiile customization options...

That's just scratching the surface. I love using those features on a daily basis and encourage my Steam friends to do the same. I've managed to build a small circle of friends where we post our activity, share content for games, chat about upcoming titles, etc. I wish more people used those features!