Social bookmarking is a way for people to store, organize, search,
and manage “bookmarks” of web pages. Users save links to web pages that they like or want to share, using a social bookmarking site to store these links.These bookmarks are usually public, and can be viewed by other members of the site where they are stored
Social Bookmarking also known as Bookmark management service is an online service which allows users to submit your content, favorite web documents, annotate, edit, comment and share bookmarks of web documents.
Currently, social bookmarking websites are considered the most effective off page search engine optimization activity which significantly plays an important role in SEO ranking and help to increase your brand awareness.
When you are looking for instant approval social bookmarking websites for good quality backlinks, websites domain domain authority/ page authority/ page rank is a major factor which you should need to consider.Visit : Bookmarking Sites List
High DA and Dofollow Social Bookmarking Sites List
It is necessary to do social bookmarking to promote and increase domain authority of your website or blog.