I'm not sure they invented that, I used moltbook and found it didn't have it, so I created it and posted it here a good 2 weeks before they posted their post: https://news.ycombinator.com/item?id=46850284 - not that I care, want credit, or think ideas are worth anything, just like I didn't invent it, they didn't invent it either. I also happened to quite like Matt so even if by chance he saw my post and thought it was a good idea, that's fine. (I feel I sound bitter in this post, I'm not)