I'm marketing a Rosetta Stone pay per call offer on Commission Junction. My target audience is SPANISH only speakers from the US/Canada who are interested in learning English. Payout is $18 per 3 min call. No AdWords or Bing ads allowed. I was thinking about buying a billboard in a heavy Hispanic town and putting up flyers around. If anyone else has another marketing tactic or maybe even a Spanish only email list I could send out a solo ad to, would be a big help. Thanks for your time!