The Collaborative International Dictionary of English v.0.48:

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.]
   [1913 Webster]

         The prey of ring droppers, . . . duffers, touters, or
         any of those bloodless sharpers who are, perhaps,
         better known to the police.              --Dickens.
   [1913 Webster]

WordNet (r) 3.0 (2006):

touter
    n 1: someone who advertises for customers in an especially
         brazen way [syn: tout, touter]