Tout

1. noun

   one who sells advice about gambling or speculation (especially at the racetrack)

   Similar: tipster

2. noun

   someone who buys tickets to an event in order to resell them at a profit

   Similar: ticket tout

3. noun

   someone who advertises for customers in an especially brazen way

   Similar: touter

4. verb

   advertize in strongly positive terms

   “This product was touted as a revolutionary invention”