If your blog isn't monetized, this article may not interest you. It should, though, because it'll still increase your traffic rankings with services like Alexa. Either way, I'll explain the why as I give you an example.

Which do you think will make you more money, 1000 visitors who view one page or 100 visitors that view 10 pages? It depends on the content, of course, but I believe the latter to be easier to prove. If your blog is monetized with Google AdSense, a single page may not have ads that are relative to the content and the ads displayed may be uninteresting to the visitor. If the visitor views more pages, more ads are displayed and the likelihood of the visitor clicking on an ad increases.

You may wonder how I know this. Well, I recently wrote an article on Clicky - An Easier Web Analytic Website. Using Clicky's "Spy" feature, I watched the activity for my article on Digg Me Not and saw people clicking the links that I included with the text. Ever since I started making a habit of interlinking my articles, Alexa has shown me that my page views fluctuate from 1 to 7 page views per visitor. Before that, they were almost always stuck at 1.

I also use the Similar Posts plugin for WordPress. It, along with various other "related posts" plugins, establish a list of related (and some not so related) articles below the current article. Using a plugin like this won't hurt (it can only help to increase page views), but I believe interlinking is way more effective.

A long hypothetical question is in order: If my blog and your blog are virtually identical and we both only use Google AdSense for revenue and Alexa says my traffic rank is 200,000 and my average page views are 5 while your traffic rank is 100,000 and your average page views are 2, who do you think will make more money?

Try to visualize this:

1000 visits x 1 page view = 1,000 effective visits (1 ad displayed per person)
100 visits x 10 page views = 1,000 effective visits (10 ads displayed per person)

See my point? By the way, I interlinked two articles within this article and I didn't even have to try hard to do it. There's your example.