"The myth of user-generated content. “Those who create are rare; those who cannot are numerous. Therefore, the latter are stronger.” A lot of social media sites assume that a lot of their users will be heavy contributors. They then proceed to design a product geared only toward heavy contributors. This is wrong-headed. Less than 0.5% of a site’s users (often FAR less than) are heavy contributors."

— If Chanel Were a Product Designer | Hugo Liu’s Taste Blog