I disagree, Hubski's interface is hardly anything way out of the ordinary for it's kind of site; you have voting where the community decides what gets the most attention, your information and other tools are at the top, and you can follow users as well as tags; these are all things that people know from reddit or twitter, although it does take a day or two to learn the ropes of Hubski, I feel as though the sober aestethic (No image previews, very little bright colors) and the small, polite community (Which can be intimidating.) do more to make the site what it is. Lastly, you can't really blame a particular age group for reddit's current state, the one common denominator of the bad parts of reddit is a large reader base, /r/teenagers was a pretty polite place last I checked.