The browser solution is a nice idea, but it'll never work. There's too much information out there to consume in a million lifetimes, so even with a fancy browser-side solution, how will you find anything? And if you do find something somehow that's amazing quality, then what? How will your coworker who could really use that one specific tiny drop in the ocean of content find it? Will you recommend it to them? Vote for it? As soon as you introduce any method of filtering content whatsoever, it will be reverse engineered and gamed so that the quality stuff will no longer be synonymous with the popular content. Don't believe me? Look at Reddit, and increasingly, HN. this problem is ultimately not solvable in a scalable way without strong AI.