Truncation is automatic in most fields, which can lead to some unusual results. For large retrieval sets, the search can be narrowed further by adding city, state, ZIP Code, or area code. All of these options, coupled with the size of the database, make this a valuable resource for a number of different searches. New business start-ups can check to see if there are any similarly named businesses in a specific state. Researchers can compare communities based on the number of listings under specific categories.
Travelers can search for specialty stores before they arrive at their destinations.
As with the printed yellow pages, finding the appropriate yellow page category can be difficult at times. An option to browse the complete list of subject headings would be a welcome addition to the category search option. The database itself is compiled from yellow page directories from all over the United States, but American Business Information, Inc. also independently verifies the information for each entry. Central Source makes the database available for free, but as with print yellow page directories, companies can pay for various special services. Links to a business' home page are even free, but for additional listings in other categories, bold listings, display advertisements, or even a Web page, an annual fee is required.