Personally, I never look through a person's post history beyond a rare casual glance, and that's usually because I *like* what they posted, and want to see if they posted anything else upvoteworthy.   But for some people, when you say something they don't agree with, and yet they can't refute it, they get really desperate to make you look bad, so they go through your post history, only so they can mock you about what you posted on a *support forum*, and drag that into a *totally unrelated discussion*.  I'm actually really proud of myself for never having done anything that juvenile and petty to *anyone*. Because it's completely fucking retarded.  Also, I had one guy accuse me of being a contributor to The_Donald, and I've never once been there.  I don't support Trump. But people conflate one position with another. And these are supposedly 'enlightened liberals' who 'don't stereotype'. Very disillusioning.