There are four major social bookmarking site i am still using that is Digg, Twitter, Stumbleupon, reddit. This all four bookmarking site i am daily used for my blog. It gives me good result as these are best social bookmarking site.
Hi Sampath Thanks for sharing the best social bookmarking sites. I have checked all these sites have great popularity and Page rank from Google point of view. Surely it will gave a boom to achieve traffic and backlinks for your site.