4. I think many people post links before sharing. There are several people I follow that almost never comment on anything that they didn't post and the only reason they seem to be here is to get exposure for their personal interest or work. I follow them because I want to see what they will post and give not a fig about the fact they don't comment. We don't have a big spam problem so why would we want to make more hoops to jump through to battle a problem that hardly exist. 2. I like the clean look of Hubski. I think it would be nauseating to destroy the whole aesthetic so people can post a pithy or banal profile pic. 3. Yea, more clicks to get at the goods. Why do you want hoops? People can easily structure their posts like this if they want. Personally I don't want to extra clicks to get to the content that the person intendeds to present.