[bigiain]

I wonder if that's something the algorithm can detect?

Measure the time between when someone clicks a link to the article and when they upvote it, compare that to one of the "estimated reading time" metrics of the linked page...

(Which, of course won't work, because at least some people (ie me) open a bunch of tabs for everything that looks interesting on the homepage, then spend a few minutes at a time over the entire morning choosing a tab and reading/voting...)