I found a link to a slide show in the "Late Night Revolution? In Taste, Perhaps" article. I know in class we've talked about how print news is designed to draw the readers' attention to different parts of the paper. It seems that online news is the same way. The slide show link was in the article. Below this link there were links to two related articles. There were links to these same two articles on the slide show page. The last page of the slide show was the same as the second to last, except that a box popped up prompting the reader to either go back to the beginning, go to related articles, share, or email.
The very nature of the interactive content has a tendency to draw people in as well. People are more likely to pay attention the whole time if interaction is involved. I remember hearing that, in general, the typical attention span is about seven minutes long--or something like that--and that's why commercials were spaced the way they were on television. I don't know how accurate this is, but, regardless, it is true that people are more likely to stay interested if they are involved or if the page changes--e.g. each new picture of the slide show along with new captions as part of the news.