Toni, I am seriously underwhelmed by the depth that you went into to create this article. I acknowledge that the subtitle says "outlines some issues" but seriously.....
How about a discussion about some of the Pros and Cons.
E.g. in Word Documents. They can contain meta data that you may not want recruiters and potential employers to see.
They are easier to edit if as a recruiter you want to cut out the dross (and contact information) and forward to employers
And Pro's of PDF Documents.
PDF's are more difficult to edit.
Modern PDF's can have digital rights information embedded.
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