The points made in chapter 4 of Cappon's The Associated Press Guide to News Writing make sense. If someone is reading an article full of long sentences, and that person isn't accustomed to it, the meaning can get lost. Also, it seems like the key to news writing is to keep everything brief so that more information is conveyed in less space. Keeping sentences shorter also cuts out unnecessary words, as Cappon points out. Like many things, though, I think this is easier said than done. We just need to watch out for this when revising. We may not always catch it while we're writing.
Other Thoughts On Chapter 4