Personally, I think bloggers ought to have some protection too. The only reason prosecutors need to go after reporters or bloggers is that they wern't getting the job done to begin with.
If government employees were able to pass along info with confidence, all sorts of things would come out, and Bill Clinton would probably be in prison.
And "journalists", whether MSM or bloggers or the local gossip, would have full freedom to fabricate story lines.
Everybody would have immunity. And there would be no way to corroborate their claims.