The Promotional Services heading holds 28 catalogue cards for websites offering advertising, marketing, and digital promotion services to businesses. Entries include full-service marketing agencies, search engine optimisation consultancies, social media management firms, and paid advertising specialists. Coverage is international, with entries from Hong Kong, Turkey, and several Western European countries. Browsers researching the technical side of web services should also consult the Technical Services heading. The Thicket16 catalogue files entries under Promotional Services when a site's principal offering is the promotion of other businesses' goods or services, whether through paid channels or organic methods.