Every one knows the importance of back links to a blog or websites. Search engine give more preference to dofallow back links . Dofallow back links help to rank well in search engines. Even search engines consider the articles shared on Social Bookmarking sites as worthy and valuable.
Social bookmarking websites allow Internet users to organize and store bookmarks to online resources. The sites provide folksonomy-based tagging, sharing features, web feeds, and bookmarklets to easily add entries. Users can access their bookmarks from any computer.
Below is the list of high pr social bookmarking websites or top 50 free dofallow free social bookmarking sites 2015.
above listed top 50 free social bookmarking dofallow websites are high quality and best page rank sites. Use these top 50 social bookmarking sites to post your blog or website content every day it will help you to increase your page rank and get good rank in the alexa.