I joined a few months ago but haven't posted recently due to real life. I like the site design and the people seem nice. Something that really interests me is the design of online communities and the interaction between people, particularly when voting systems are involved.
One thing that comes to mind is that users are quite dispersed at the moment. If someone new comes along it can look sort of empty. reddit had the same problem early on and I think they solved it by keeping all discussion in one place for a while until more users turned up. Obviously hubski has a different design, maybe pin (right word?) a few more discussions to help concentrate the community?