Article Submission: Article Submission is the process of taking informational articles and publishing them to article directories. Informational articles are not self-promotional based, but give people actual valuable information regarding your industry. It is an ethical tool used by the webmasters to get one way quality links to their website. The articles usually contain some promotional text that is relevant and so the people are encouraged to publish it with the specific link back URL. Article submission means submitting your article to some article directories which increases your website traffic very fast. Article Submission is the way to promote your website and link that produces real results almost immediately. Social Bookmarking: Know about social bookmarking refer this url http://en.wikipedia.org/wiki/Social_bookmarking
Article submission Article PR is a way of increasing your search engine ranking. It's a completely legal form of Search Engine Optimization (SEO), favored by Google. In essence, you're trading knowledge for backlinks (inbound links to your site). Social Bookmarking Social bookmarking is a method for Internet users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of metadata, typically in the form of tags that collectively and/or collaboratively become a folksonomy. Folksonomy is also called social tagging, "the process by which many users add metadata in the form of keywords to shared content".
Article submission - submit articles. Social bookmarking - bookmark pages on social bookmarking sites. Hope that's short and clear enough for you.