Weirdly I find myself thinking back to how far ahead of the curve Livejournal was. It's uncanny how much it got right, and how long it took for other platforms to come close to catching up with the functionality. I think the key was that it could be what you wanted, but maintain a consistent feed.

It has taken nearly twenty years for any other popular social media platform to approach LJ's level of feed control and post control.It has taken nearly twenty years for any other popular social media platform to approach LJ's level of feed control and post control.