As for the factors behind that low popularity? Like other struggling social services, it may be just a matter of Talkshow trying something that wasn't especially unique or vital. People have public chats all the time on Facebook and Twitter, and moving them to a messaging app format isn't necessarily advantageous. And of course, many people prefer still like to keep group chats private so that they can share sensitive info in confidence. Talkshow's harassment-free environment and focus on topics helped it stand out from the crowd, but those perks might not have been enough to cultivate a sizeable following.