Blogging Ethics

Articles like this show how the line between journalism and blogging is blurring, and highlight calls for bloggers to adopt journalistic ethics. But is this realistic? Except for a few professionals, the blogger/journalist line is still thicker than the news blogger/personal blogger one, especially for sites like this and this that make up an overwhelming majority of all blogs. Are we going to start imposing a code of ethics on speech itself? That's the road some people seem to want to take.