[wordupmaking]

Allow people to tag their posts, and have friends who tag their posts. Then have an option to not see posts of type X (link, photo, text, video, audio) tagged with Y by contact Z. Have further options to display little icons with some info for hidden posts to easily expand them inline. And so on.

Yes, you'd have to manually curate some things, but otherwise I think it's mostly just a matter of not hiring any marketing people, and creating the features first and looking how to make them easily usable second. Especially if the goal isn't to "kill FB", but simply offer an alternative to those who want the good bits and actually like, uhh, reading manuals and being proficient with the tools they use.

They can't come if there is nowhere for them to come to, and then it's easy to pretend they don't exist. But they do, even among the old and young and not so technical.