New York Business Journal: BuzzFeed scours vast swaths of the web for its content, but it relies on a handful of websites to generate the majority of those posts. The top source for BuzzFeed, according to an analysis, is Tumblr — which is where the viral content website sourced the now infamous photo of “The Dress” is racking up millions of views. “If media sites are looking to compete with BuzzFeed at being BuzzFeed, here’s where to look. Internet culture is out there and it’s only on a few sites.”