HackerNews is the only place I've ever heard of this happening :) In the "wild", I've never witnessed it once, so I'm actually curious what it means. Do you s

HackerNews is the only place I've ever heard of this happening :) In the "wild", I've never witnessed it once, so I'm actually curious what it means. Do you select the entire block of text you are in the process of reading? Do you drag your mouse cursor along as you read? Isn't this horribly frustrating most of the time with all bad style sheets and ad overlays and embedded ads, etc, on most big news sites?