Some of the strongest online growth is coming in online information niche sites --- sports, celebrity and so on --- and the Wall Street Journal looks at how their business models differ from conventional ones.
For one, they aggregate in niches and often pay contributors according to their traffic. They find smaller but more deeply connected advertisers to support their sites. And they partner --- meaning, they find larger sites looking for niches and affix themselves.
It's a worthwhile examination of a healthy trend.