:) To devil's advocate myself, though: Where does this logic end? On the extreme end of the spectrum, we can agree that a doctor who skips the disinfectant is

:) To devil's advocate myself, though: Where does this logic end? On the extreme end of the spectrum, we can agree that a doctor who skips the disinfectant is categorically a bad hire. But what about less extreme cases? Where do we draw the line? What about a developer who doesn't use version control? Or who doesn't use automated tests? What if they do use those things, but within those genres, they've chosen tools you happen to despise? So I think it's tricky to know which products should be considered mandatory for quality hires. That being said, I still stand by my comment on LinkedIn. The more debatable examples I gave above are tools that directly affect the quality and efficiency of a developer's work. LinkedIn is not, and that's a pretty big distinction.