The problem with messaging apps such as Whatsapp/Telegram is that they're very poor for sharing photos, you have to send them in conversation 1 by 1, or create a group with people that might not know each other, or broadcast list, it's an ugly experience. Txtter has a profile page where you can share endless photos instantly. No commenting is allowed on pics so it's a simple clean experience. Txtter also has usernames.

invite sent, once signed up, add the username "gazalo" so you can have content.