Facebook users can now show they're organ donors on timelines

Robin Roberts spoke with Mark Zuckerberg exclusively on Good Morning America Monday (courtesy ABC News)

FROM ABC NEWSAbout half of all Americans are "on" Facebook, meaning the social networking giant touches a lot of lives everyday. Now, CEO Mark Zuckerberg is announcing how he's putting that popularity to good use - perhaps life saving use. There aren't too many aspects of our everyday lives that Facebook hasn't already touched, from how we make friends to how we connect with them. Now it's CEO Mark Zuckerberg who is taking things one step further. In an exclusive interview with Robin Roberts, the 27-year-old says he's using Facebook's one billion users to potentially help save thousands of lives.

"I can add that I became an organ donor and you can say who you want to share it with," Zuckerberg said.Starting now, you can share if you're an organ donor with the Facebook universe and find links to donor registries. Zuckerberg says aside from the figures: more than 113,000 people are on organ transplant lists, 18 of them die everyday, he says he was moved to help after seeing the site's power around the world. "In Japan people were using Facebook to locate their friends and family and we thought, ok, can we do anything that would help people solve other types of issues," he said. "Like all of the people who need organ donations." {}More personally, he was influenced by the late Steve Jobs, his idol who received a liver transplant, and his longtime girlfriend, Priscilla Chan, an aspiring pediatrician. "Our dinner conversations are often about Facebook and kids," said Zuckerberg. "And the kids that she's meeting and she'll see them getting sicker and all of a sudden an organ becomes available and it's like her face is all lit up because someone's life is going to be better because of this."Zuckerberg says he understands that some people won't want to be bothered by yet another status update on their timeline. For those people, he says, they don't have to participate but he hopes enough connections are made to make a real impact.