Hi all from this thread and all the replies on that thread http://www.sitepoint.com/forums/show...do-Bookmarking I ahve come to know what is social bookmarking.

But I have a question how does it helps to get high PR - I mean, how it is beneficial to SEO? A confusion develop in my mind that if I just register to a social site and bookmark my site but I do not have any friends in my social account - is it then helpful; bcz how others (as I have no friends in the list there) will got notified about the site that can generate traffics to my site?

I think I am able to make u understand my confusion. Please help me to get it clearly.