(CNN) -- Ashton Kutcher has challenged CNN to a popularity contest on the social media site Twitter.
CNN and Ashton Kutcher are racing for 1 million followers on Twitter.
The celebrity and the news network are racing to get 1 million followers on the micro-blogging site, where users post 140-character messages.
Kutcher challenged CNN to the race with a Web video posted on Tuesday. If he wins, Kutcher says he will "ding-dong ditch" CNN founder Ted Turner's house.
"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, which was shot from inside a car and was posted on Qik.com.