bookmarking is to inform other about your site and get traffic in your site. But article can be anything like a story (story are not like site related as bookmarking are) with your site url with anchor word. hope i can explain a little bit. thank you.
Social Bookmarking is like telling these different sites about what you've written and sharing a sneak preview with people so that they could visit your site for the complete article. Article Submission however is submitting a complete 300-500 words of your niche on different article directory sites. Both are done for SEO and referral visitors. Article Submission now a days is considered more effective!
article is about the page story and directory submission for the back-links of site and bookmarking is to represent your site to others.
yes that is right bookmarking is only like summary of part of your website identity, article submission directory is building back link....
When you bookmark lets say to Facebook your telling your Facebook readers about that specific page or article. A bookmark is usually a symbol or image placed on the page close to the article on each and every article you write. In Wordpress the"Sexy Bookmark" plugin is a great example of bookmarks. "Tweet this!", or "Share on Facebook!" are words that you can also find that are used as a bookmark. When you submit to a directory your placing a link to your site also called a backlink because it links back to your sites main page or index page. Both are forms of SEO and both are needed to gain favor in Search engines. They also work as ads to your site telling the reader about your site or article.
Article writing is something that the name suggests, Bookmarking is when you submit the URL of a certain page along with the link and a small description.
Article is a wholesome description of the title chosen and good article directories generally prefer a word count of 350-500 words in article body and a signature of the author of the artilce..while Social Bookmarking is a technique to popularize the favorite link by bookmarking a link with the TITLE and Description chosen in social bookmarking websites.. and making it publicly available..