What’s a common resume tip that is actually really bad advice?

One of the most common and most harmful recommendations is to send a video or otherwise graphically enhanced resume to any medium- or large-sized employer that does not explicitly ask for one.

Why? Because the vast majority of them use applicant tracking systems (ATS), and almost none of these are able to handle video or graphics. Candidates who rely upon video or graphics to communicate their qualifications or career interests put themselves at a significant disadvantage when applying to jobs advertised by these employers.