I think perhaps an option is not to limit how often people can post, but limit how little they post, i.e. there is a minimum word limit for each post. Add the

I think perhaps an option is not to limit how often people can post, but limit how little they post, i.e. there is a minimum word limit for each post. Add the 'like' options for any general short response (agree, like, love, sad, angry, +1, haha, shock, thanks, etc), but having a minimum demands at least some effort into posting. The obvious problem is people just posting /10char type responses to hit the character limit, but if it's a word limit with some AI that can recognise 'bad' patterns in structure it could be mitigated to an extent. You could add a grammar checker and advise corrections or perhaps prompt to improve the message if particularly poor. This would be implemented for public posts only, because for private conversations it is not so relevant to positive discourse.