In the following video, Jeremy Phillips and Austin Smith talk about tech executives who don't often eat their own cooking, or engage in what's known as "dogfooding" in Silicon Valley parlance. In other words, these execs don't use their own products. For example, Google's Eric Schmidt has been known to use a BlackBerry. Marissa Mayer -- at Yahoo! now, but originally at Google -- uses an iPhone.

Jeremy says investors should want to see executives using their companies' products. He notes that Facebook requires employees to access Facebook with mobile devices, to get them thinking about new ideas and solutions. Austin has a slightly different spin, though they agree that the goal should be superior products from the executives' companies.

For more details, check out the video.

Austin Smith and Jeremy Phillips own shares of Apple and Google. The Motley Fool recommends and owns shares of Apple, Facebook, and Google. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.