During my experience with SEO and website promotion i realized that Social Bookmarking websites play an important role in getting your website to be more popular. For this reason i've compelled a 900+ social bookmarking websites list in hope that it will help your website development.
The list contain the main social bookmarking websites and also those that are not as popular.
Disclaimer : It is likely that some of the websites to die but i will maintain the list updated!
