Social bookmarking is a way to bookmark our favorite web pages and read them anytime & anywhere if you are connected with Internet.
We all know social bookmarking sites boost your ranking in search engine.
As google said higher PR is more important and valuable on search engine result, that mean High PR Social Bookmarking Sites will give a lots advantages these will spread all link juice to all your pages. Today Social Bookmarking Sites numbers are kept grow so that mean that will make you harder to find the good one for associate, because of it that many webmasters hesitate to do social bookmarking a submission.
The social bookmarking sites are using many ways to organize the bookmarks, thus creating pages and sections of targeted content, making the web content easier to find.
Below is the most comprehensive list of social bookmarking sites on the web.