The best Social bookmarking sites 'nofollow' links, so no link juice is passed.

Rest of Social bookmarking sites have posts made just for SEO, and content is useless. So such sites do not attract traffic. They cannot pass on SEO benefit.

Be cautious of posting to poor quality sites. One fine day Google will wake up and penalize such links.

Social sites are interesting ones and most people visit them.Social bookmarking is the best Source of getting traffic to your web site.

I use secondary keywords as title for social bookmarking

social bookmarking submission is a part of Off Page SEO

social bookmarking is the best way that increase links

Thanks for share that information

Social bookmarking is a method to bookmark our preferred web pages online to read them if we are connected with the internet. And we know that the excellent backlinks helps us to boost blog traffic and Google Page Rank. So, SEO professionals include Social bookmark in their search engine optimization practices. That’s why SB is the excellent way to boost traffic.

I don't like to use one keyword or unnecessary long term keywords. Sometimes I twist the title with something relevant from the body while submitting.

yes social bookmarking play an effective role to promote a site.