Some important facts that is listed about how useful youtube is world wide!

Total number of YouTube videos -- over 120,000,000
Number of videos uploaded per day -- about 200,000
Time required to see all the videos -- over 600 years
Number of videos watched daily -- over 200,000,000
Amount of content uploaded every minute -- 13 hours
Number of accounts on YouTube -- over 300,000,000
Percentage of videos violating copyright -- over 12%

Youtube is the most second most used search engine on the enterent..after Google ofcourse..its even above Yahoo and Bing!!
Youtube is used for up loading videos to share to friends and strangers all over the world. Your able to advertise on youtube for jobs or for different businesses.