At the top of each article, there are icons that, when tapped, display the table of contents for the article, and a gallery of images from the article, expanded to a larger size.

WSJ: Encyclopaedia Britannica Now Fits Into an App

An 1896 David Kelly print of the battle is historically inaccurate, but Brock's tunic, on display here, is the genuine article.

WSJ: 1812 | Canadian War Museum | Four Ways to Look at a War | By Mark Yost

This display of apparent naivety, together with the article's condescending, sneering style suggests that Naomi Klein is not the only one with some growing up to do.

ECONOMIST: Mapping settlements

For example, he says, an advertiser for yoga vacations can display ads when the customer is searching for yoga vacations, reading an article about yoga vacations, browsing a Web site on holistic health or watching an online video on stress reduction.

FORBES: Slouching Toward Online Advertising

But according to a perspective article in the current issue of the New England Journal Of Medicine, the abilities on display may not be all that natural, but rather drug-enhanced.

FORBES: The Athlete's Pharmacopeia

So it may make sense to display advertisements for computer hardware, software or services alongside the online version of this article.

ECONOMIST: Behavioural targeting