Social Bookmarking is very important for SEO, in both manners for getting traffic for your blog and for improving your blog’s SEO. Social Bookmarking sites allow free access to bookmark your blog, promote and share it with others to let them know about your blog. There are many social bookmarking sites available those you can use. But be careful while choosing sites to bookmark your blog, choose only high PR bookmarking sites.
Here is a list of Top 25 Social Bookmarking sites list with high quality hope this list will help you.
Top 25 Free Social Bookmarking Sites List