ResultSource was a San Diego–based book marketing company that conducts "bestseller campaigns" on behalf of authors. The company states "We create campaigns that reach a specific goal, like: 'On the bestsellers list', or '100,000 copies sold'." For example, for a negotiated fee ResultSource will guarantee that a book becomes a bestseller. It does this through bulk book buying programs designed to manipulate the metrics used by Nielsen BookScan and the New York Times Best Seller list, among other strategies.