Facebook turns 12 on February, 4. Zuckerberg who wrote the first code for Facebook in January, 2004, in a hope to help students at his college connect and bring the community together, is overwhelmed as millions of people around the world today use Facebook to stay connected with friends and loved ones.

"On February 4, I hope you'll join me in celebrating #friendsday -- a moment to celebrate the friendships that have made a difference in your life," the 31-year-old billionaire wrote in a Facebook post yesterday.

"If you have a story about friendship, I'd love to hear it. Please share and I'll read as many of them as I can!," he added.

According to Zuckerberg, the acts of friendship, love and kindness we all share on Facebook are changing the world every day in ways we can't fully measure.

"Sometimes they just make people in our lives feel a bit more loved. Sometimes friendship becomes a force that sets us on a different path in life. Sometimes friendship moves the world," he posted.