Some search engines, such as AOL, require for a business to manually list on their site. In this instance you must find the category that your best fits your business and submit it from that page for review. All search engines usually limit how often you submit your site. Submitting every day will only get your site kicked off. Most seem to suggest that you resubmit every 3 weeks.
Most professions have many types of professional listing services.
This may be a site dedicated to the professional field as a resource or a specific organization with members and affiliates. Professional Resource Sites Professional resource sites usually offer anyone in that profession a method to conduct research online and in many cases, directory listings of professionals in the same or related fields. Listing on these sites may be free or paid. Before deciding to list on a site, review it to see if it fits your needs. Overall, set a criterion for reviewing a site before you use their services.