Discovery : (2) " In the early 1950s, during the near avalanche of discoveries, rediscoveries, and redefinitions of subcellular components made possible by electron microscopy, those prospecting in this newly opened field were faced with the problem of what to do with their newly acquired wealth. " - George Emil Palade " The way the Facebook network is set up, it’s not as suitable for content discovery. Twitter is better, but there are too many over-sharers. Also, on Twitter and Facebook, everything comes from people you know. On StumbleUpon, it comes from people that you don’t necessarily know but share your interests. " - Garrett Camp