Designed to create a huge amount of traffic at all times, these sites focus on building an audience of millions. These websites promote products to their massive audience through the use of banners and contextual affiliate links. This method offers superior exposure and improves conversion rates, resulting in a top-notch revenue for both the seller and the affiliate.
Spam is the biggest threat to organic search engines, whose goal is to provide quality search results for keywords or phrases entered by their users. Google's PageRank algorithm update ("BigDaddy") in February 2006—the final stage of Google's major update ("Jagger") that began in mid-summer 2005—specifically targeted spamdexing with great success. This update thus enabled Google to remove a large amount of mostly computer-generated duplicate content from its index.