Are ambassador programs replacing paid advertising?
As an internet marketing professional I can tell you this. I spend and have spent hours analyzing clickstreams and AdWords crawls to map traffic online.
To keep it simple, people don't click on classic ads anymore, they only click on ads that they don't think are ads. With an ambassador program you have the opportunity to tap into a demographic so specific to your target audience where no one even feels they are walking into an impulse purchase trap!