At my last startup (TheSharedWeb) we tried to do something like this, sans the natural language processing work these guys are doing [we used a manual strategy and tried to focus on the presentation]. Anyway, we never really perfected the experience, and ended up pivoting away.<p>These guys are doing some sort of NLP magic and it seems to work really well. If they could get reddit in the content stream, that would really encompass all the content I'm consuming