If you have a web-based company or if a reasonable portion of your business is done on the web through your website, then the best advertising and marketing is done by submitting to a search engine. No amount of press release, newspaper or radio ad, banner ad, spam email or newsletter will achieve the same results, although, maybe effective in a small proportion.
Beware of companies that promise "automatic submission" of your website to hundreds of search engines which are but only false promises. The best way to submit your website for search engine ranking and inclusion is to do it yourself or to hire an expert to do it manually.
Before you begin to submit your website to search engines ensure your website is thoroughly designed to the professional quality using the right key words, good graphics and pictures and the relevant content. Do not submit websites that are incomplete. While submitting to a search engine, make sure to provide information about your website, keywords and any other information that may be pertinent, including the name and contact information of your business.
Mere submission to search engine companies does not guarantee that your site would be immediately listed and the ranking will be high. Because there are thousands of new websites coming up every day and it may take quite sometime before they take your site for review by human editors.
Here is a list of the most popular Search Engines and directory companies:
Excite / Webcrawler
AOL Search Inktomi
Lycos Open Directory
There are thousands of search engines and directory companies, where you can submit your website to as many companies as possible.