Search engines will often list results from bookmarking sites. Therefore, if your site bookmarked, this is an extra opportunity to show up in search results. People who reach your site from a social bookmarking site are generally there because your Web site appeared in a search for topics were interested in.
This tells search engines not to follow the link, and so you will not reap any benefit from additional links! This may sound rather strange, but people who book mark may use more than one bookmarking site. Whenever you email a friend, family member, colleague or anyone and send them a link or a website you think that they are looking for or they might find interesting, you are participating in social bookmarking. Here are the great business directory, social bookmarking and social sites, please bookmark them for submitting breaking news, images, video and stories: