hello what is the new update of doing social bookmarking and directory submission off page seo techniques?
Social bookmarking is safe, but will do nothing to help your rankings. Directory submission I would ignore. How social bookmarking helps: Acts as a social signal to help legitimacy in Google's eyes. Any website that is getting backlinks from other webpages is very likely to also be getting social bookmarks. If its getting one, then it should have the other. They can be used to help anchor text distribution. Since Penguin, you don't want all your anchors to be target keywords like "dog training". Use social bookmarks to create longtail and niche related anchors: "Just found this site that helped me potty train my puppy".