Yair Rosenberg
*whispers* all social media platforms devolve into the worst versions of themselves, it is the natural life cycle of every single such platform to date. that people think any new social media site will turn out differently is the triumph of enthusiasm over experience.
Nate Silver
The founder effects of "Twitter-type" social media platforms seem profound, and probably the default outcome is for them to (d)evolve into the worst versions of themselves. I'd think you'd have to take some specific steps at the start to avoid them becoming echo chambers.