Craigslist is not only gigantic in scale and totally resistant to business cooperation, it is also mostly free.

The free section of Craigslist is a jumble of objects in limbo – items that owners refuse to toss, but wouldn't bother selling. What inspires someone to list an object for free on Craigslist ...

Boat — Glenside Craigslist/. A free boat on Philly Craigslist. Comes with the motor. It's 13 feet long, you get to be the annoying person who sings this on your maiden voyage.

But Craigslist was the first website to make free, small-scale advertising widely available to the masses. Newspapers have been working hard to develop new sources of revenue.