the most popular song on youtube is gangam style.
Not exactly. If you look at his YouTube channel, it says he is the most subscribed and has the most friends. He is very popular though. Nobody knows who is most popular but the YouTube makers who work and created YouTube.
no YouTube is not the most popular website google more popular so is Twiter and facebook
The most popular topic would be the Uncategorized category, which has a whopping 11,817,405 questions as of October 18, 2014. The next most popular category is the Math and Arithmetic category with 1,400,706 questions. The third most popular category is the Celebrity Births Deaths and Ages category with 1,029,523 questions.
If popularity is measured by the number of questions per category, then the Chemistry category is most popular with over half a million questions.
Google is currently, the most popular website in the world, YouTube is #4.
Nora the piano playing cat is the most popular cat pm YouTube. She has over 2.58 YouTube videos
YouTube and Hulu are pretty popular
youtube.com
Going by questions and category contributions, Justin Bieber is the most popular celebrity on WikiAnswers with more than 57,500 questions in his category as of 2011.
vevo and youtube
YouTube. YouTube is the #4 most trafficked website in the world, while MySpace is #12.