Only 10 years ago, the Internet was a very different place - it was impossible to easily watch music videos, MySpace was the premier social media platform, looking up DIY videos was a hassle and the Rick Roll meme didn't even exist.

Then YouTube happened and everything changed.

Nowadays, most people can't go a day without going on the Google-owned site to look up cute cat and puppy videos at work or check out the latest viral video. When Chad Hurley, Steve Chen, and Jawed Karim, all PayPal employees at the time, launched YouTube on Feb. 14, 2005, they changed much more than just Internet culture, though.

Only last month President Barack Obama did an interview with YouTube stars. In that sense, one could say that YouTube has affected politics similarly to how the invention of the television did. Look up any prominent politician's name on YouTube and you will see numerous speeches and promotional videos.

More than one now-famous music star was discovered on YouTube. Justin Bieber's mother posted a video of him at a local talent show on the site in 2010. Five years later, you'd be hard-pressed to find someone who doesn't know who Bieber is. Beyond discovering talent, YouTube has drastically changed the music industry. Only two videos on the site have more than one billion views - the music videos for Psy's "Gangam Style" and Bieber's (feat. Ludacris) "Baby."

Likewise to music, YouTube led to a massive change in the entertainment industry. The site's launch and success predates Netflix streaming and Hulu. All three platforms now offer consumers ways to watch television shows and movies from the comfort of their own home.

It doesn't just stop there. YouTube has changed the definition of celebrity, created the definition of vlogging, overhauled the advertising industry and discovered new ways for people to learn and teach. 

As Telegraph reported, the third-most visited site on the web is so special because it gives users complete control - anyone can put the "You" in "YouTube." Who knows what YouTube will bring to Internet users in the next 10 years.