There's been a lot of debate about whether Amazon's (NASDAQ:AMZN) treasure trove of purchasing data could be valuable to marketers. By leveraging its data, Amazon could theoretically develop an advertising network that could outperform Google's (NASDAQ:GOOGL). In the video below, Fool contributor Steve Heller tells Google investors whether they should start worrying about Amazon's push into advertising.

Fool contributor Steve Heller owns shares of Google. The Motley Fool recommends and Google. The Motley Fool owns shares of and Google. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.