now a days social bookmarking submission is useful or not, please share some tips.

Social bookmarking is still more effective in SEO to create more plenty of quality back links and more effective link popularity present on the websites.

I still prefer Social bookmarking for site. 

Social bookmarking is still more effective in SEO to create more plenty of quality back links and more effective link popularity present on the websites.

Social bookmarking is a method of networking in which users save and share links to Internet content which they believe may be of interest to others. It is among a large families of activities which people can engage in as a form of social networking.

Delicious, Reddit, and Digg are examples of sites which provide social bookmarking services, along with collaborative tagging, in which people add metadata for context. Tagging is useful, as users can search tags to find content related to a specific topic.

Social Bookmarking is still best and worthy technique of link building we can get quality back link from it.