Are you really planning to not allow photos? I understand your reasoning for why this works in places a group chat wouldn’t, and I have group chats that I wish could do what your site does (share things to all my friends but we don’t all have to have all the same friends). But something I really appreciate about some of those group chats, especially smaller ones like a group of three, are the photos that friends post. Usually it’s not low effort, it’s real photos of their real lives. I like what you are doing a lot but the ability to post my photos to show to friends seems like a must for me.