Photo by Pablo Twose Vall
There is an in inherent weakness to crowdsourcing that should bother computer scientists and computer users alike. It's the fact there is no clear difference between "the wisdom of the crowd" and "the mob that rules." What's missing is a measure of discernment.
I suppose another way to think about this is the wisdom of crowds is a collection of educated guesses while crowdsourcing degrades to a collection of uninformed opinions.