Reddit.com is one example of social bookmarking website that is highly and strictly moderated by its administrators. Because of the strictly implementation of their rules and guidelines, Reddit has a good reputation as a social bookmarking site and Google gives a high pagerank for the website.
Also, since the death of directory submission, one of the SEO techniques that has been once proven effective, SEO guys made an another attempt to increase their website visibility on the internet. They started flooding the social bookmarking websites with the website URLs they are promoting and as a result of this, they get good traffic, visitors and good SEO impact to a particular website.
However, Search Engines are committed to providing high quality and related search results for the benefit of their searchers and to keep their good reputation maintained, specially Google, Yahoo and Bing which are widely known by every single person who has access to the internet. Therefore, they will not probably figure out how to deal with Social Bookmarking websites to lessen the spam results from Social Bookmarking in every search queries.
Joseph Gojo Cruz is the author of RankingElite, a Philippine-based Online Marketing blog. Joseph has been working in SEO industry for over 3 years from website audit, link and content development, social media and search engine optimization. Connect with Joseph on Google+, Twitter, and Facebook. Joseph is also a contributor on SEJ and Ahrefs.