Ashton Kutcher isn’t cool just because he’s one of the few stars in Hollywood who played high school football. And he isn’t cool because he recently promised to ding-dong ditch Ted Turner‘s house. He’s cool because he just donated 10,000 nets at $10 a piece to stop the spread of malaria in Africa. Kutcher did it to celebrate becoming the first person to reach 1 million followers on Twitter, which inspired CNN to donate 10,000 nets, which got Oprah Winfrey to pitch in 20,000 nets. Perfect with World Malaria Day Saturday, April 25. But what if all million of Kutcher’s Twitter-ers gave a net? That would be a million more lives saved! Now Turner has posed a challenge: If 10,000 more people join the Nothing But Nets campaign—the program I helped found with the United Nations Foundation—he’s going to have Kutcher and his wife, Demi Moore, over for lunch If that happens, I’ll donate 2,000 more nets myself. And do the dishes.