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.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.