In perhaps a transitional moment for the Web 2.o movement, Oprah Winfrey the quintessential American female tastemaker has finally set up a Twitter account and reportedly will send her first “tweet,” Friday’s broadcast featuring Ashton Kutcher, the self proclaimed “King of Twitter.”

Oprah made the announcement yesterday (Thursday) via her Facebook page and is as of this post up over 100K followers.  Not bad for 24 hours.   You too can follow oprah at twitter.com/Oprah but don’t expect her to immediately return the favor.  Currently she’s only following 9 Tweeple including Shaquille O’Neal, political icon George Stephanopoulos, and fellow talk-show hosts Jimmy Fallon and Ellen Degeneres.

Though the news might seem insignificant consider Oprah unprecidented influence for molding the trends of American culture.  Books she likes and pubs on “Oprah Book Club” become instant best sellers and lets be honest without her, we might not even know who Barack Obama is let alone host him in our White House.  

Kutcher (twitter.com/aplusk) also made his own news today after he defeated CNN in a freindly popularity battle to see who would be the first to gain one million followers.  Kutcher originally issued the challenge via a video blog posted on Tuesday.  He vowed to “ding-dong ditch” CNN founder Ted Turner‘s house upon winning.  No word on exactly what the hell that is or if he’s done it yet.

“I found it astonishing that one person can actually have as big of a voice online as what an entire media company can on Twitter,” Kutcher says in a video posted on Qik.com. “So I just thought that was just kind of an amazing comment on the state of our media, and I said that, if I beat CNN to 1 million viewers, then I would ding-dong ditch Ted Turner.”