The Nation, the leading left-liberal opinion journal, has launched a slick new website using Drupal, an open-source content-management system that’s free and can be tweaked by anyone. “If he understood open source, Glenn Beck might well denounce it as a socialist practice,” writes Peter Rothberg.

A bit of an exaggeration, given that Drupal is used by such diverse organizations as GateHouse Media and the White House. (Oh, wait …)

The best news for media junkies is that Greg Mitchell’s blog, Media Fix, has finally made its long-awaited debut. Mitchell, the former editor of Editor & Publisher, is a double-barreled master of the tweet, posting what seems like 18 hours a day at @GregMitch and @MediaFixBlog. His blog goes straight into my Google Reader list.

Like its more moderate counterpart, The New Republic, The Nation will reserve some of its premium content for paying customers, writes editor Katrina vanden Heuvel. A shame, since opinion journals are trafficking in influence, not revenue.

Nevertheless, I suspect TheNation.com will quickly prove to be more widely read (if it isn’t already) than the rather hidebound print edition.