The YouTube story: how this 10-year-old has taken over the world

• The number of YouTube users in the world. That's a third of all internet users on the planet
• It's also rising exponentially: the number of people who visit YouTube daily goes up by 40% every year, mobile viewing by 90%

• That's how much of YouTube's traffic comes from mobile devices
• A Cisco Systems study estimates that by 2018, video will represent 69% of all mobile internet traffic - it's at 53% as of last year - which means YouTube's numbers aren't going to see a drop anytime soon

• That's YouTube's estimated 2014 revenue
• According to global investing firm Jefferies, the site valuation is between $26 billion and $40 billion. That means it's probably worth more than Twitter ($30 billion). Still a long way to go before they catch up with Google and Facebook, though, which are worth $400 billion and $200 billion respectively

• That's how much video is uploaded to YouTube every minute
• Or, you know, every episode of Friends ever made - all 236 of them - played three times over
• As recently as 2010, it was just 24 hours of video a minute

hours

• That's how much video is watched on YouTube every month
• That's roughly 4,50,000 years

• That's how many years' worth of video material YouTube scans for copyright infringements daily, so if you were hoping to slide something under their nose, think again

(and counting)

• That's how many times South Korean pop star Psy's Gangnam Style has been viewed on YouTube, and it rises each day
• It's still the first and only video to have broken the two-billion mark
• Even YouTube hadn't anticipated this scenario: in December 2014, Gangnam Style 'broke' the website's view counter. They previously used a 32-bit integer to count views, but have now been forced to change their coding to use a 64-bit integer

views

• The second most viewed song - come on, really? - is Justin Beiber's Baby

• That's YouTube's ranking on the most used search engines in the world, second only to Google
• It has more users than Bing, Yahoo Ask and AOL put together
• Although YouTube has smaller reach than Facebook, it is more widely used than LinkedIn, Google Plus and Twitter

• The number of people who actually make money via the YouTube Partner Programme
• There are more than a million channels in the programme, up from 30,000 in 2011

• The number of subscribers to PewDiePie, making it, according to SocialBlade, the most popular channel on the site
• It became - and has held - the top position since August 2013 and now has over eight billion video views
• PewDiePie's estimated monthly earnings are between $84,000 and $1.4 million

• That's the proportion of original videos uploaded in 2013 that were about a pet or an animal
• Video marketing pros ReelSEO last year found there are approximately two million cat videos up on YouTube, with about 24.6 billion views between them. The position of leader of the free world may be up for grabs soon but it's undisputed: on YouTube, cats make cash counters ring.