Code reviews are a big part of writing software, especially when working within a team. It is important to have an agreed-upon etiquette for reviewing code within a team. A code review is a critique and a critique can often feel more personal than the code writing itself. A sloppy, under-researched, or insensitive code critique can cause difficulties between team members, reduce overall team productivity, and diminish code quality over time. This post will briefly define code reviews, describe some common mistakes, and provide some quick tips for improving a code review process.