You might find this interesting - http://functionspace.org/discussion/new There is lots of interesting stuff on Math, Physics and Computer Science
P.S -I founded it.
P.S -I founded it.
but what about storing notes mainly intended for personal use and referencing in discussions? other users could see these by viewing a profile or following a link in an article or discussion, but such notes wouldn't necessarily appear under a navbar link.
then, after there was this notion of personal space, there could be a feature like the github activity tracker (on saturday you pushed 2 definitions and a lemma), content could be reviewed (so-and-so agrees that this proof is correct), and these notes could be restructured into discussion topics, articles, and whatnot.