Link building is a process of submitting our site's links to various web sites.The most basic method of link building is Directory Submission. Directory submission is an important element of making our website more approachable on the Net. A directory is an Internet resource of related links that could have useful information for the user. Directory submissions provide increased link popularity. When using directory submissions, we can get our website listed in Google and other major search engines. We can have Increased visits from search engine robots. There are number of benefits of directory submission. One of the main benefits of Directory Submission is high quality back links. Since the main aim of directory submission is quality link building, thus indexing by search engines is assured when we are submitting our website in different directories.