More than two billion videos are viewed on YouTube every day.
The Google-owned site, which is celebrating its fifth birthday, was receiving eight million daily views within six months of launch.
To celebrate its five-year anniversary, YouTube has launched a special site which offers a timeline charting the video-sharing site's milestones, as well as video-playlists from celebrities.
YouTube is also encouraging web users to upload video clips of themselves revealing how the site has affected their lives.
"We are a stage and we give everyone in the world an opportunity to participate and that is being a video platform for creating a solution for people to not only upload and distribute their videos on a global basis but to find and share videos," YouTube co-founder, Chad Hurley told the BBC.
Hurley revealed that while reaching two billion downloads is a milestone, the video-sharing site has "much further to go".
"Two billion video streams is a large number but on average people are only spending 15 minutes a day on the site compared to five hours a day watching TV.
"I don't think we could have ever planned or imagined we would get to the scale or the size we are today. We were mostly trying to create a video solution for ourselves based on our own frustrations. We are proud of what we have achieved so far but we have a lot of work ahead."
See also: Google: YouTube was sustained by piracy