The video for Psy’s Gangnam Style reached two billion views on YouTube.
Source
YouTube Live had the largest viewed broadcast ever, with guest artists performing from San Francisco and Tokyo.
YouTube was founded & the domain name youtube.com was activated.
Google announced that it had acquired YouTube for $1.65 billion.
Psy's 'Gangnam Style' music video became the most viewed video on YouTube, passing 800 million views.
5 Seconds of Summer member Luke Hemmings posted his first YouTube video.
