Interesting idea. I've actually seen similar things over the years, even as early as 2006. Unfortunately these cute little kinds of things usually generate a bit of buzz but then die out. Hope it grows well for you though.

PS: not a fan of the clickbaity title. If it wasn't a Show HN I would have ignored it. A better title might be just what you put in the description, "A joyful slow social media", for example.