I don't see how I would find an interesting new user...? It seems like a Catch-22... you are either seen by people and your content is shared (thereby exposing you to more people) or you sit in a silent purgatory, with nobody noticing your content because it hasn't been shared. What am I missing? (A little more context: I'm not really sure how Hubski works. I just go to Global and see what's there, then I go to Chatter to see what people are talking about that I missed in Global. Some people and tags show up in green, which makes me think I follow them, or are friends with them, or something... but I'm not sure how that changes my experience in Global or Chatter.)
That's correct. Comments will work like posts currently do. Someone will have to find your comment in the global comment stream and follow you/share it. Following doesn't make a huge difference to the site experience atm. You follow 9 users and 22 tags and our feeds look very similar.