He also says on Twitter he will donate 10, 000 mosquito bed nets to charity for World Malaria Day in late April if he beats CNN, and 1, 000 if he loses.

CNN: Ashton Kutcher challenges CNN to Twitter popularity contest

Kutcher had challenged CNN to the Twitter race, saying he would donate 10, 000 mosquito bed nets to charity for World Malaria Day in late April if he beat CNN, and 1, 000 if he lost.

CNN: Oprah, Ashton Kutcher mark Twitter 'turning point'

"We'd like to thank every one of our followers for helping CNN reach the 1 million mark, and we are delighted to raise our donation to 10, 000 bed nets for World Malaria Day in recognition of them, " Martin said.

CNN: Oprah, Ashton Kutcher mark Twitter 'turning point'

Each year on April 25 the world recognizes World Malaria Day to call attention to the disease that kills nearly one million people each year and, negatively affects educational achievement, worker productivity, and economic development, and to mobilize action to combat it.

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