Drezner argues that the internet hasn’t killed intellectuals:
…critics fail to recognize how the growth of blogs and other forms of online writing has partially reversed a trend that many cultural critics have decried — what Russell Jacoby called the "professionalization and academization" of public intellectuals. In fact, the growth of the blogosphere breaks down — or at least erodes — the barriers erected by a professionalized academy.
From later in the essay:
Perhaps the most-useful function of bloggers, however, is when they engage in the quality control of other public intellectuals. Posner believes that public intellectuals are in decline because there is no market discipline for poor quality. Even if public intellectuals royally screw up, he argues, the mass public is sufficiently uninterested and disengaged for it not to matter. Bloggers are changing that dynamic, however. If Michael Ignatieff, Paul Krugman, or William Kristol pen substandard essays, blogs have and will provide a wide spectrum of critical feedback.
The Dish 