<p>Everyone should be careful of what they say online. Asking if it ok for a person's career to be blocked from progress for some thing offensive they posted ten years ago is akin to asking If someone should be prosecuted for a crime they committed ten or twenty years ago. I know people make mistakes but we should be careful of the type of mistakes we make. Mistakes made on the internet are hardly forgotten.  The moment they are dug out, they would still produce same effects of ten years ago, though that shouldn't be a justification for blocking someone's career progress.</p>