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'Best yet to come' for Facebook
Facebook creator Mark Zuckerberg said the "best is yet to come" as the internet giant celebrates its 10th anniversary.
The multi-billionaire said he uses the social networking site to share photographs of his "ridiculously cute" dog Beast who has acquired more than one million Facebook fans.
Mr Zuckerberg, who was named Time Magazine's person of the year in 2010, said it is "mind-blowing" to reflect on the success of the website he launched in his Harvard dorm a decade ago, and said "there's always a next move".
"It's been a pretty amazing journey, and you know it's so rare to have the opportunity to touch a billion people's lives," he told the Today programme in the United States.
The 29-year-old added: "It's pretty mind-blowing I think to think about. I remember really vividly having pizza with my friends a day or two after I opened up the first version of Facebook.
"At the time I thought someone needs to build a service like this for the world, but I just never thought that we'd be the ones to help do it. I think a lot of what it comes down to is we just cared more."
The 10 years since Facebook's inception has not always been plain sailing, with legal wrangles, criticism over privacy issues and a rocky start in financial markets - but "there's always a next move" with the internet giant.
"We've just gone through a number of periods where people just didn't believe that we could succeed at what we were trying to do.
"I've spent a lot of late nights pacing around my living room with team mates, just trying to plot out what our next move can be in order to keep pushing forward on this mission, but there's always a next move," Mr Zuckerberg said.
When asked about how he enjoys the wealth Facebook has brought him, he said: "I wear the same outfit, or at least a different copy of it almost every day. I got a new grill recently, does that count? My wife and I love cooking."
Mr Zuckerberg said he tends to just use his phone nowadays, and uses Facebook to share photographs of his pet.
"I almost only use my phone at this point, so I'll write these long emails, or, a lot of the work that I do I'll do just writing on my phone. When people get these 10-page emails they're like 'how did you write that on your phone?'," he said.
Adding: "I definitely have a page for our dog Beast. He actually has more than a million fans. He's this ridiculously cute dog. He looks like a little sheep. He's a sheep herding dog. And he's just this little 30-pound dog, and he's amazing."
While some analysts question Facebook's staying power and have expressed doubt over whether it will be here in another 10 years, Mr Zuckerberg is optimistic.
"I'm just so grateful to have the opportunity that I've had to serve so many people, and I really think that the best is yet to come," he said.