onlineleben - 9:04 am on Nov 23, 2011 (gmt 0)

Could you just split your unique articles into 2 pages, so that the have to click to go to the second one which triggers a new GA load and records the end of the first page visit? - You just move the problem to an other page but you would get feedack about how long people really stay on these articles (at least on their first page).