A new song about McCain makes our ears bleed; once again, OpenLeft asks its readers if it should endorse; the YouTube election 2.0; an Obama video is Obama-sistable; Peter Daou defends Hillary against three myths about the race; Obama has more Twitter followers than anyone (take that, Scoble!); and CafePress charts the most popular candidates showing up on t-shirts.

Steve Grove offers a nostalgic tour de 'Tube; a cool chart shows the ratio of Obama's blog mentions and those of Clinton; mp3's of the campaigns' conference calls are surfacing; Blue Majority supporters vote not to endorse; Patrick Ruffini on the death of top-down campaigns; Firedoglake gets fired up about an AP article; deciphering Hillary's attack calculus; and a smidgen of online fun from John McCain.

Judging the efficacy of a Google bomb campaign against John McCain; three liberal blogs ask readers if they should endorse a candidate before the nominee emerges; another piece about why Twitter matters; illustrating the strength of viral video; congrats to Josh Marshall on his Polk Award and NYT profile; Hillary Clinton launches Delegate Hub, controls the tubes; John McCain continuing to generate little online enthusiasm.