Right now a majority of Hubski users want more content - pretty much any good content - that is slightly relevant to them. Since a population of Hubski is reddit users, following tags is the best and most familiar way for users to get what they want. I think as Hubski grows and we have more and more users and more posts, the way people inherently interact with the site will change to combat seeing content they don't want to see. I am still a believer that following users gives you a more personalized yet serendipitous experience on Hubski but I also forsee using the ignore button a lot more as the types of people and content on Hubski diversifies. I've seen that as users are on the site longer, they find their own balance of following users, domains, and tags. That's the freedom of Hubski. You can make your feed exactly what you want and your feed is easily editable to absorb and avoid content you like or dislike. Hopefully, like twitter, your feed will be solely yours. Unlike twitter it'll be more slow moving, more in depth and easier to judge the value of the content. Also keep in mind that we are constantly reexamining site features to figure out what works and what doesn't. If something is obviously hindering the general user experience and we discover better ways for users to get the content that is right for them, mk and forwardslash will implement it. The Hubski goals are more broad than the concept behind twitter or reddit. We want a community of people where everyone can discover, learn, and discuss thoughtful content online. How we arrive at this creation is an ever evolving contraption.
I agree, I think the system we have now will probably lend itself quite well to growth. The combination of following tags (which does lead to the potential of Muzak-esque averaging) with following domains and people (be they power users or simply people who post/share a lot of things you like - philosopher-kings) makes Hubski a really interesting system. It's like how the user in the Reddit post descibes: James Cameron makes what he wants to make, and he is a good director (well, I won't get into that, but the example stands). We can trust the users we know/like/recognise or whatever to continue to post and share things that we like/are interested in - or even (and this is where I think the Hubski system is massively beneficial) their opinions, thus at least partly combating the averaging problem.