Since I became wedded to my Kindle for consuming journalism thanks to the superb sites such as http://longreads.org and http://longform.org * my reading time has exploded, plus I pay for services where possible as I am in need of their curation. Since using these sites I feel better informed about the world and I have a deep, deep respect for longform journalists. I'd love to see this stub idea extend to the Kindle being able to manage updates - it seems to be an exiting idea for readers and journalists alike and I'd willingly pay a subscription.
*fixed url typo
Also - these sites can send articles directly to my Kindle email, or I use the Readability plugin to right-click on any url and have the contents delivered on demand.