tout·er /ˈtaʊtɚ/
  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.
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  touter
       n : someone who advertises for customers in an especially brazen
           way [syn: tout]