[pitay]

If it includes a recommendation system, then something to mix them up a bit so that people can see things that are different to what they have holed themselves into one view/subject by their own karma curation. The idea is that each recommendation has a chance to be anything, more likely something suggested by karma, but has the tiny chance to be the thing that karma suggests I least like. I like the idea of seeing a subject that I didn't know I was interested in or posts I would find objectionable some of the time.

[davidivadavid]

Yeah, you could introduce a random element of serendipity where you sometimes push a bit further out of the graph to discover things out of your usual purview.