Studies have shown that people are more likely to read an article in the newspaper if there's a photo to go with that story. The better the photo, the more people read the story, and online that means more page views, which in turn means more ad revenue.
Studies also show people aren't reading newspapers anymore. It's a fact of life. I understand this entirely if the Sun-Times is trying to stay afloat. I'm not sure I share in the sentiment that this is in any way sad (Especially when compared to the newspaper industry as a whole).