Could I offer a suggestion?
Please don't make the website easier to use. No, for real. I don't even understand how to use it properly right now. I click hubski and it tells me I'm not following people, I have no idea wtf that means or how to do it. But I'm going to stick around because I appreciate the discussions I've had so far and what I've learned so far. I know a lot about running a website is attracting a userbase (I've ran a few websites and forums), but even more important is attracting the RIGHT userbase. So long as the website remains highly available only to those willing to learn and interact, rather than just throwing up an opinion without warrant, your userbase will remain quality. I'm not for nazi-like moderation (I've seen that happen too many times in forums I've been a part of or started), so I believe the best barrier that keeps good users in and crap-posts out, is the natural barrier of entry that is requiring to learn about a website/how to use it before being able to post your opinion. In this method, only those opinions worth hearing, those who've decided they understand the methods of discussion and believe they would like to contribute to discussion, are the ones who end up posting and end up as long time users.
I appreciate the work so far, mods. Make sure you keep it up and expand the userbase while maintaining quality. It's a hard job to do, I'd know and I know you know because you've all likely experienced the balance between free opinion and moderation of standards that I have while running websites and forums.