Linkd for social bookmarking sites will do help bring in link traffic from readers but technically it will not help SE ranking so there's NO SEO benefit.

Still, having a text link from a high PR,...

Yes and I'm one of thoes approx 300 new signups daily through Googling.

Hello World!

My name is Tom, from the Philippines. I work fulltime on the internet at home. I do domain name investing, collection and then put them on PPC parking. I do a bit of SEO also, just...