TEN FACTS ON YOUTUBE ANNIVERSARY
* The most viewed video of all time, Gangnam Style, still gets one million views a day
* YouTube can be navigated in 76 different languages, a number that covers 95 per cent of the internet population
* Me at the Zoo - by YouTube co-founder Jawed Karim - was the first video uploaded; the second was My Snowboarding Skillz
* Half of YouTube views worldwide are on a mobile device
* The most popular cat on YouTube is the animated Nyan Cat
* On average, creators get more views from outside their home country than within it. Sometimes a lot more - for every one local view of an Australian-made video, there are another nine views overseas
* People around the world have 'Rickroll'd' each other more than 70 million times - tricking them into clicking links that lead to the video for Rick Astley's Never Gonna Give You Up. That's one 'Rickroll' for every person living in London, Tokyo, NYC, Mumbai, Cairo, and Buenos Aires combined
* The countries with the highest per capita YouTube viewership in the world are UAE and Saudi Arabia
* YouTube's number one non-music video is Charlie Bit My Finger (Again), with more than 800 million views
* Rebecca Black's Friday is viewed almost three times as much on Fridays as any other day of the week
