Which bookmarking site is the best for do-follow backlinks?

[Harsh $]

There are many Dofollow Social Media Bookmarking Sites But Webmasters Only Prefers High PR Dofollow Social Bookmarking Because it Give a High Quality Backlinks
Here am Share TOP 15 Dofollow Social Bookmarking Sites :
>> http://tenxblogger.blogspot.com/2014/02/...-2014.html

[Hoang]

Bookmarking links give very little effect.
Best links in SEO is links from private blog network.
To find out more you can check out this article alfazz.com/authority-sites-outranked/

[mountbromo-]

I want to raise social position to travel blog.