Buckmaster of Craigslist doubts that we have seen the end of the printed newspaper.  He mentions, in an interview with Tom Keene from Bloomberg, the usability requirement to meet the needs and wants of the customer:

"The number of employees required to meet the requests and needs and wants of users turns out to be startlingly low."

Buckmaster of Craigslist Doubts Demise of Newspapers Feb. 28 (Bloomberg) — Jim Buckmaster, chief executive officer of Craigslist, spoke yesterday with Bloomberg’s Tom Keene about the company’s strategy to allow more free postings of advertisements on its web site.

And yet, so few companies try to do it.