Publicist (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">publicist</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that promoter is a type of advertising person)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for promoter that I've seen before include "Find me in torpor like publicist of product" , "One books entertainments" , "Sponsor" , "Impresario" , "Organiser (of a sporting event)" .)