They sure do accumulate, to the point where by the time you go back to some old tab, and that tab just so happen to be replaced with a window.opener trick, [1] there is no chance of you remembering what was there in the first place, and spotting the fake.<p>[1] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11631292" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11631292</a>