Is Social Bookmarking alive?

Is social bookmarking carrying a good weight age? As i heard that SB is losing his priority, any ideas about it?

Now a days only bookmarking and putting your link on different bookmarking sites are not enough, because most of the sites giving now follows links now.
Secondly you need to maintain a good community over there. Like at digg or Stumble Upon, you need to follow people and they also follow you, you should exchange your links with them and re tweet each other links. In this way bookmarking is still effective else its not.

Social bookmarking is always alive…It can be done with all social networking sites like facebook, twitter etc…
you can also find related sites/blogs/forums to do backlinking for your page and can start trading…The keywords and tag for ur content is more important
Thank u