Barriers to entry are both a problem and a solution. There's a reason joining Oakland Hills country club (the big PGA caliber place 'round here) has a several hundred thousand dollar buy-in and a five year waiting list (with sponsorship).
I was kicking something similar to what kleinbl00 suggested above around in my head last night -- how about an account called announcements or (I would say hubski but that's taken) something that's mandatory for everyone to follow? Similar to reddit's mandatory subreddit, I guess, although their announcements are never relevant to me at all so let's do better there.
I think we should name it Tom, you know a little nod to myspace. Really that's what mk uses the Hubski account for. When he makes an update from it it goes in to everyones feed.
My former boss is a member and took me to dinner there once. It was alright. The golf course is amazing though.