Take a look at this article from the NYT. There are hyperlinks all over it, and not just the usual ones linking to related stories at the NYT – they’re links to stories and background from all over the Internet, including Bloomberg.com, the CDC, and others.
I must admit I’m surprised, but this is a good thing for readers; it enhances a reader’s knowledge of the full story, and allows the author to stuff digressions and sources in the links. One advantage of Web/Kindle reading over print is that the Internet allows for placement of footnotes in the actual text, as hyperlinks (you can also do this in a Microsoft Word document, but I haven’t seen many people take advantage of this). David Foster Wallace would have loved it.