@Spacedrake i don't think discoverability is a barrier too much, but it's a 'gossip protocol' which is pretty unique so
A makes a post, they're friends with B who sees it. C is only friends with B but they see A's post. But X is only friends with C so they may not see the content of the post but only see that A posted.
Once you peer with a few big peers then the network populates pretty well though.