Online news sources less diverse?

It looks like our local academic community are starting to take the online phenomenon seriously. The Centre for Media Studies have found that the online news industry is using fewer rather than more orginal news sources, so they conclude that it is providing less news, not more. I’ve not read the detailed findings, but the research seems to have to be designed to focus entirely on mainstream online offerings to the exclusion of the kind of informal networks through which many proactive consumers access their news.