The article is about a new economic model - a paywall on the online version for some of his owned papers. The paywall's function would be that users would pay a small token amount for the subscription. Colin Horgan, the author discusses in the article whether the modell would work or not. Horgan explains and criticizes the model at the same time - with presenting nowadays internet user habits.
However the article is from 2010 the topic is related to our topic and between the comments one can find metaphores that raises interest.
Here you can find the article.