[mikecane]

It's not possible to can serendipity. No algorithm can make a leap like a human mind, connecting two things that a machine would see as separate. This is why I've never used any personalization. I don't want to see only what a machine "thinks" I should see.

[albion]

True, the best articles are always the ones which take you in a completely new direction. However I have also found that those same interesting articles are often not very popular which leads me to think social news sites have their flaws. Perhaps the solution needs to not look at what is popular/similar to what you already like but rather new concepts (not that I have any idea how to achieve that)