Mike Pastore, editor of the Intranet Journal, has written an interesting analysis on the evolution of paid content and syndication in For Paid Content, the Times They Are a Changin'

“For decades, the way to keep the knowledge workers in your organization on top of industry news was to subscribe to the services of a content aggregator like Factiva, Dialog, or LexisNexis. The evolution of intranets and electronic delivery fit well with this approach, but now the amount of free content available to people with an Internet connection is changing the rules of the game.

The "deep Web" — online content that sits behind subscriptions and members-only barriers — and the not-so-deep Web (free Web content) collided with the launch of the Yahoo Subscriptions beta last month. The Yahoo service, which added LexisNexis and Factiva to its list of content aggregators and publishers this week, lets users search both the open Web and the deep Web in one search. And if you already have a subscription to Yahoo Subscription's publishing partners, you get to use the Yahoo search technology to search multiple publishers and aggregators as well as the open Web.”

For Paid Content, the Times They Are a Changin'