I suspect like most of us, I have one photo that I pretty much use for everything online. It was taken about 4 years ago and isn't especially corporate or professional, but it is the only shot I have of just my face, in focus, on a plain background.
I've never been in a situation where I've had a professional headshot taken, and I never think to ask someone to take my photo on the rare occasions that I bother to put on makeup (oh, the joys of working remotely) so I just make do with this one.
Every time my mother sees it online in a professional setting (LinkedIn, conference sites etc) she comments on it. I'm not sure whether she's a bit 'old school' or whether she has a valid point.
I'm curious – does the professional (or otherwise) nature of someone's headshot affect the level of respect or authority that you afford them?
In short, should I be prioritising a new photo?