I don't know if this was actually PD, but it probably didn't make a good impression on the companies. My former co-worker, Anna, was about my age, married with a child, so you'd think she would get how things work by now. We had a major work conference coming up--I've mentioned her before, she's the one who has a lot of dietary restrictions that she was worried about, but she didn't bother doing any research about the restaurants at the conference location (and almost ordered a hamburger not realizing it was made of meat). I later found out that what she was doing instead of researching food options, was combing through the list of attendees and inviting every person peripherally involved in our field to come visit her poster during the presentation session.
Being in academia, it's expected that our jobs will be temporary and we'll be looking for work at a private company or other institution soon. So, that might have been a good move if Anna was ready to walk out the door into a new job. But she wasn't. She still had a couple years left with us, and moreover, if she was going to find a new job, it would be in the very specific area where her husband had already moved for his new job. She came back from the poster presentation session all flustered and stressed, and told me that there had been so many people there, who asked her really difficult questions about her work and future plans, and wanted her resume and articles she'd written. Of course she didn't have any resumes to hand out, and she hadn't written any articles with us (though maybe she had before she joined us). Once I found out she'd been emailing all those people (without our boss's knowledge) I was like, what did you think would happen?
Perhaps coincidentally, or not, Anna never managed to find a job before she finally had to move to be with her husband. It's been a couple years now and I'm not sure if she ever found a job or not.