A look at the fake YouTube views ecosystem where sites like Devumi.com and 500Views.com sell millions of bot-generated views and how YouTube is fighting it (Michael H. Keller/New York Times)

Michael H. Keller / New York Times:
A look at the fake YouTube views ecosystem where sites like Devumi.com and 500Views.com sell millions of bot-generated views and how YouTube is fighting it  —  Plays can be bought for pennies and delivered in bulk, inflating videos’ popularity and creating an environment ripe for manipulation.