a friend of my just had his computer bricked and his parents went to get it fixed, while doing so the computer tech's told his parents he got a virus from downloading from faulty sites, apparently they then searched his hard-drive and showed his parents sites he'd visited xd and lets just say he's in a lot of trouble now lmao
so just imagine if people could see all that you have looked up or web pages you've visited on your current pc/mac

and who is the last person you'd want to see?
i personally wouldn't care, i haven't done anything to bad.... other than look up how to blow shit up occasionally