Will the NYT charge for online content?

The Associated Press reports that The New York Times Executive Editor Bill Keller has hinted that the newspaper might charge for access to some of its online offerings. One possibility includes charging for full-access subscriptions. From the story:

In an online question-and-answer exchange with readers this week, Keller said that although advertising generates the bulk of online revenue, "a lively, deadly serious discussion continues within The Times about ways to get consumers to pay for what we make."