I’m not sure that journalism is adhering to journalistic standards any more. Blogs that strive to be news blogs have not always even stated having journalistic standards as a goal. Some have mocked them. As they strive for legitimacy, however, they will have to adopt principles of objectivity and careful sourcing.
Television “journalism” seems to be increasingly blurring the lines between news and commentary. Witness brouhahas on MSNBC and Fox News recently in which network personnel in “talk” formats said shocking things.
As for newspapers, they are being run by financial men. They are searching desperately for a way to make money online with their professional content gatherers since their traditional readership is falling. The result is not a lot of investigative (controversial) journalism.
If you got back to the history of journalism, the very earliest days of newspapering, the news was very suspect then, and there were no standards. I think as the Web matures as a medium, standards will develop for news blogs.
Until then, it is up to discerning readers to take things in with a critical and skeptical eye.