More than 100 million people around the world log in to Twitter every day to tweet about everything from their daily commutes to the meals they eat -- but many have used the social networking tool this year for something much more important: share important events with people who could be thousands of miles away.
Every year, Twitter compiles a year-in-review to recap what the company believes were the most important tweets. They highlight the "best" according to the level of "impact, resonance, and relevance," and take into account the big stories that first broke on Twitter -- not by news agencies -- but by people looking to share a photo, a thought, or a moment in time with people they may never meet.
"World News with Diane Sawyer" sat down with Twitter co-founder Jack Dorsey to go over this year's list:
1. "Welcome back Egypt #Jan25" Wael Ghonim, a marketing manager at Google who became a symbol of the revolutionary movement, was held in captivity for nearly 12 days by the Egyptian government under Hosni Mubarak for organizing protests. When Ghonim was released, he told an Egyptian network to not focus the cameras on him. "I'm not a hero. The real heroes are the youth who are behind this revolution. By God's will, we're going to clean this country of this rubbish," he said. "I think the most important lesson there was that you give people simple tools and they will use them in good ways." said Doresy.
2. "Helicopter hovering above Abbottabad at 1AM (is a rare event)." A local man in Abbottabad, Pakistan unknowingly live-tweeted the raid on Osama bin Laden's compound before any news agency broke the story of the terrorist's death on May 1.
3. "my daughter her name is sarah m. rivera" Through Underheard in New York, an initiative to help homeless residents in New York City speak for themselves, Daniel Morales was able to use a prepaid cellphone to create a Twitter account and tweet, "my daughter her name is sarah m rivera." He posted his cellphone number and a photo of her at age 16. Morales was reunited with his 27-year-old daughter, Sarah Rivera, when she called him the next day.
4. "This lockout is really boring..anybody playing flag football in Okc..I need to run around or something!" "Twitter makes the world feel a lot smaller," said Dorsey, the co-founder of Twitter. That was definitely the case during the 2011 NBA lockout, when Oklahoma City Thunder player Kevin Durant tweeted, "This lockout is boring…anybody playing flag football in Okc…I need to run around or something!" A student at Oklahoma State saw the tweet and invited Durant to join him and his fraternity brothers in a game. A few hours later, Durant arrived, ready to play football with them at a local field.
Watch 'World News with Diane Sawyer" tonight for more on Twitter's Top 10 list
5."Brooms up London!" After riots in the U.K. dirtied the streets this August, people rallied on Facebook and Twitter to organize a massive clean-up effort in the affected areas. An account on Twitter called @riotcleanup gained over 70,000 followers and brought together those who wanted to help.
6. "Here's another Photo of the shuttle from my plane." In May, NASA launched the space shuttle Endeavour. Stefanie Gordon, aka @stefmara, took a photograph of the launch from a plane and tweeted it, capturing the launch from a new perspective.