Submitting your website to the various online directories is an important part of any Link Popularity campaign. While your traffic from many directories may be minor or irrelevant, relevant incoming links to your website will help in your overall search engine link popularity.
Paying for your directory submission can be a waste of money. You can get just as good a result from submitting to free directories. Personally, I wouldn’t recommend you pay for what you can get free elsewhere.
The best directories to submit your site to are Search Engine Friendly directories (those that actually have your site URL listed at some point, rather than outlinks that are simply code). Some will ask for a reciprocal link, some will not. Opinion at the moment is suggesting that non-reciprocal or one-way links are better, although any relevant link is useful. Directories that do not encode outgoing links will help your website’s Search Engine Ranking.
Deep Linking can be worth linking to other pages on your site other than your main page. Before doing this, make sure that the directory you are submitting to permits you to both submit URLs other than your home...