Making sure submission guidelines are followed, greatly enhances your chances of being listed. Ask for recommendations, or referrals from satisfied customers. Search engines funnel the traffic flow of the web. Most established sites are listed. If you want to be found, get listed.
Search engines are part of Internet life, check guidelines before submitting.
They are all different. If you want to be found, you want to be listed. Getting listed in the right places can make a difference. Start with major directories like Yahoo and Lycos. Then look for directories that catalogue sites in your field.