As has been said by others (and by SeventhProphet's edit), the best thing to do is let lurkers be, but, for those of us who post/comment/contribute, continually make Hubski somewhere attractive to newcomers and those already here.

As a background-in-a-nutshell, I've come over from Reddit (and Fark, SomethingAwful etc before that) and basically came too-late-to-the-party. I was drawn in to the idea of Reddit: separated groups based on individual interests, being able to have a tailored, constantly changing news feed, and the ability to share findings across the web and engage in debate and constructive arguments on those topics.

Unfortunately, the rise of it's popularity has meant that there's less 'community' and collegial activity, which I had been searching for. Don't get me wrong, I still browse Reddit, but it's now more for consuming, not contributing.

As someone else I saw mentioned quiet brilliantly, and I am paraphrasing/rewording here: Reddit is for the loud broadcasts, Hubski is the quiet room to escape to.

It's been 36hrs, and I've commented more times at Hubski than I have anywhere else. With any luck I won't annoy too many people haha, and would love to start up an #australia following!