Web directories are banks of information, just like search engines. They hold data related to myriad topics and are highly useful when it comes to scouting for information on the World Wide Web. However, the biggest difference between the directories and search engines is the fact that the former usually caters to editorial guidelines before picking any website to be a part of its network, whereas, the latter can crawl and index any site, without looking at its credentials.

Directory submission is one of the most effective off-page search engine optimization techniques. Most of the directories have 'human' reviewers who scan all sites submitted therein, and don't entertain the ones that are found wanting in terms of quality. And, unlike search engines, directories list websites, and not individual web pages. Therefore, to be listed with them, you have to ensure that your site is a complete package, adorned with the requisites that such directories demand.

The process of directory submission is simple. First and foremost, you need to decide on the directories you wish to cater to. For optimization purposes, make sure you submit your site in Yahoo and DMOZ. Both these directories can bring you increased traffic as they are used by maximum number of web users.

Secondly, find out the categories and sub-categories that best suit the topics covered in your website. You can either surf the directory to know about categories or search categories according to keywords that have been used on your website as well. This decision is important for SEO success because reviewers can actually reject your submission if your site is listed in an irrelevant category.

When it comes down to actually submitting the site, you should go through guidelines set by the directory in question. And, it is extremely important that you do not take any chances in this regard – follow their instructions to the T. You will also have to mention title and description for your site.

Incorporate your primary keywords in the description, and use language that can attract visitors. However, do not write irrelevant stuff that harps about your business, because it can be rejected by the editors. The title should be the main title of your site and it must be mentioned in your web pages. To be successful with search engine optimization services, the title should also be crisp and not marketing-oriented. The URL should be spelt correctly, or else you lose out on all traffic.

After you have entered all important information, recheck the same for possible errors because it is very difficult to change info already entered in a directory. If your site is accepted by the directory, you will be communicated about it.