the traditional media are rapidly being complemented by new ways of communicating on matters of public interest, many of them online, which do not involve journalists. These new disseminators of news and information should, absent good reasons for exclusion, be subject to the same laws as established media outlets.
A review of recent defamation case law suggests that many actions now concern blog postings and other online media which are potentially both more ephemeral and more ubiquitous than traditional print media. While established journalistic standards provide a useful guide by which to evaluate the conduct of journalists and non-journalists alike, the applicable standards will necessarily evolve to keep pace with the norms of new communications media. For this reason, it is more accurate to refer to the new defence as responsible communication on matters of public interest.
...though his invention worked superbly -- his theory was a crock of sewage from beginning to end. -- Vernor Vinge, "The Peace War"