The top 100 social bookmarking sites has changed over the years, but many of the core ones remain the same such as stumbleupon, digg, reddit, pinterest, twitter and tumblr. Now, the exact definition of a social bookmarking website can be debated but for the most part they are recognized as quality site submissions that can be syndicated out across the web. The process of manually submitting and managing this list is exhausting, which is why we went with Bookmarking Beast , a fully automated social bookmarking service to submit to not only the top 100, but the top thousand social bookmarking sites to improve our Google traffic.