The are a number of examples of crowdsourcing, as formalized by James Surowiecki and his insightful book The Wisdom of Crowds. The idea that you can create good content, information or ideas by an open process where a broad collection of people can choose to submit and then vote on ideas, with the most popular ideas rising to the top.
My favorite if trivial example is the ‘best of Craigslist’ site here. As you’re probably aware, Craigslist enables people to buy and sell things through a low fidelity, but very successful mass posting board. Some of those postings are notably clever, funny or weird. Note the language and content of the posts isn’t controlled or censored.
I also discuss some of the media implications of the crowdsourcing trend here.