Did you even know about the list? Adobe is an important supporter of our work as photographers. Their professional listing page seems an excellent place to be listed from. You must be a member of a professional organization, but that is the only requirement. BTW… don’t put a listing there if you don’t have a photo to go with it. (Small thumbnails accompany the listing.) After all, you are, you know… photographers.
Adobe Photographers Directory: “Photographers who want their talent seen by designers, creative directors and image buyers around the world are invited to join this Directory today. You need only be a member of a participating photography association. Just use the authentication code provided by your association to join. Click to view the list of participating associations.”