[ noun ] someone who advertises for customers in an especially brazen way <noun.person>
Touter \Tout"er\, n. One who seeks customers, as for an inn, a public conveyance, shops, and the like: hence, an obtrusive candidate for office. [Colloq.]
The prey of ring droppers, . . . duffers, touters, or any of those bloodless sharpers who are, perhaps, better known to the police. --Dickens.