I'll make brief comments, and then I'll leave it to my cohorts here.
The first thing you often think about in this sort of information is the national security issue, and it should be of great concern to all Canadians. But I look beyond that. I look at the front-line policing perspective, which protects the rights of victims.
Again, my background is in the area of investigations in relation to sexual abuse of children on the Internet, sites such as NAMBLA, which is an organization that seeks to propagate conduct between adults and children. There are websites out there such as that. If a source provides information related to that and the investigation is of a time-sensitive nature, perhaps related to locating a child, I think it's important that the information can be gathered quickly. We see this, as you've already mentioned, existing in common law.
Again, there's a story out of New Brunswick in which a media newscaster—not utilizing a source, but you could work source into that—preparing for an interview with a tech crime person in relation to child exploitation on the Internet, did research up to the point when the interview was done and then continued to access illegal images on the Internet.
Again, that's just journalists, or in this a case a media newscaster—and I apologize if I'm bringing the two into one—but it's just not lending itself to a good definition of “journalist”. Could that be seen as an issue here?
I would give you those two examples and leave it to my colleague.