TIME: “Joe Lieberman’s loss Tuesday in the Senate primary also signaled the ascendancy of a legitimate new power center in the Democratic party, the Netroots.”

I think that’s right. The big question now is, can they win a general election the same way. Joe Gandelman has a big roundup of reactions, and asks: “Is Lieberman’s defeat and Lamont’s victory a harbinger of a new direction for the Democratic party with many parts of the party on the same page — or the beginning of a self-defeating split that will cause the Democrats to grab defeat from the jaws of victory in November?”

Kaus says that Lieberman beat the spread, but agrees that his defeat is a big deal, and credits Kos for gloating “effectively and non-megalomaniacally.” But he also relays this bit of snark: “Will history record that the first significant victory of moveon.org was the defeat of a…..Democratic incumbent?”

And Markos observes: “Seeing Al From’s oldest nemesis, Jesse Jackson, behind Lamont tonight must’ve driven him insane. That brings a smile to my face.” And Karl Rove’s, I imagine.

It’ll be interesting to see what effect this has on Republican politicians’ interactions with the blogosphere. Perhaps PorkBusters will get more respect. And Kaus notes similar primary victories in GOP races on the part of the Club for Growth, which suggests that the power of outsiders is generally being magnified by the Internet. Hmm. Intriguing idea!

There’s lots more rounded up over at Pajamas Media.

UPDATE: Don Surber won’t miss Joe: “So a Trust Fund Baby named Ned Lamont, whose money goes back four generations to a partnership with JP Morgan himself, knocked off Joe Lieberman today. Good for Ned. See ya, Joe. Don’t let the door hit you on that ass you’ve been covering for years in the Senate.”