"(...) These distinctions begin to disappear when the material is put up on the website. They disappear almost entirely when linked from the home page. And there is no context whatsoever when they are picked up by bloggers, individuals conducting their own websites.
Blogs, particularly in the United States, played a big part in the dissemination of the comments in the (...) case. They do not usually want to give or even hint at context. They are often slow to pick up retractions or apologies. This "web effect" is something to which the Guardian, and other multi-section newspapers, need to give more thought."
I think Mr Mayes is tarring all bloggers with a rather large and ill-targeted brush on this point, as many bloggers are careful to set context with links out to background material. However, it would be fair to say that many are not so careful (and not everyone - and I include myself as a member of this group - is scrupulously careful 100% of the time), and this is a signal point for many news services and publishers to consider.