Blogs are not necessarily meant to be journalism (except where they is - like the Huffington Post, for example). They can be anything from whimsical nonsense through to new literature to analysis, to serious investigative work and excellent science communication (if you don't believe me, read
www.realclimate.org). Blogging it not 'better' or worse than anything else, it is something different. A new method of communication. It is an addition not a replacement. People once argued that popular novels were not real writing, that jazz was not real music and that cinema was just brainless and had no artistic value. They were all wrong. We keep increasing the media available to us - it doesn't mean that every time some new form of communication develops that everything else is wiped out or we abandon our critical faculties.
I do find it a bit amusing people who think that this isn't how things 'are meant to be' - what, in the Nineteenth Century?
And as for people who assert some massive generalised opinion without any reasons - well sorry, Dave5N, that is simply ignorant. This was also a request for information from Arch, which some of us responded to in a constructive way, so your negative opinion was not really called for anyway...