Hillary wins PA, boxing metaphors take over the universe; John McCain is the ultimate winner of PA, and liberal groups keep attacking; Off The Bus provides the sanest coverage of the primary; Willie Horton ad-man Floyd Brown re-emerges; the Lieberman/Lamont hackery fracas rears its ugly head, again; Alan Rosenblatt live on Johnny's Par-tay tonight at 9 ET!; and the Obama campaign posts a video of... Chuck Todd.

The Ned Lamont campaign is cleared once again of hacking Joe Lieberman's site in August 2006.

I didn't caucus in Washington State today. Of course, it's my own damn fault for not knowing where my caucus meets.

More on whether online activism can be turned into offline votes from the Wharton School; Ari Melber analyzes Barack Obama's impressive use of social networking and text messaging to target and organize young voters; a new Pew study shows that young people are getting much of their news from social networking sites; Jeff Jarvis charts the arc of the "change" meme; an anti-Huckabee video makes the leap from the web to TV; Kos urges his readers to vote for Romney in Michigan; Obama scores endorsements from Kerry, Miller, and Lamont; and Matt Stoller hopes Lamont can help turn Obama to his side.

Dan Gillmor calls for better presidential debates, Lincoln-Douglas style; the candidates are all courting Silicon Valley, but do they really get what makes the web tick?; Karl Rove predictably blames the netroots for Ned Lamont's Senate loss; a trick on digg leads to a Ron Paul surprise; Barack Obama rocks the Jefferson-Jackson dinner and gets a video up right away; and Obama's blog registers far more comments than the other candidates after his JJ speech. Are we seeing new momentum for Obama?

It's become a parlor game for the chattering class: Who is ParkRidge47? TechPresident blogger David All has a great post up on his personal site that, at least for me, pretty definitively closes the door on the author being a mischief-making Republican. He tracked down an email exchange between ParkRidge47 and a person who had tried to post a video response on YouTube and had it rejected, and the language PR47 uses makes clear that this person is no friend of the GOP. Well, I have a different theory, which is that it's a professional--the language in our email exchange, and the proficiency of the technical work, makes it unlikely this is a kid. So, which professional?

Witnessing the continuing brouhaha over the 1984/Vote Different video, it's easy to think that the 2008 campaigns are the first to play with online video. For the sake of context, it's worthwhile to take a step back and look at how one previous campaign paved the way for 2008.