Your next Amazon box might contain a little something extra: a sample of a product that the company’s algorithms have determined you might like. Amazon (NASDAQ:AMZN) is piloting a program that allows advertisers to send samples to consumers, Axios reports, a strategy the company hopes will help lure more advertising dollars away from Google and Facebook by demonstrating higher conversion rates to its advertisers. Axios cited a job posting that said providing samples would give brands "a higher…