#Numbers 2011



  Population
  • World Population by end of 2011 is 7 Billion.
  • Population in China is 1.3 Billion.
  • Population in India is 1.19 Billion.


  Facebook
  • 800 Million users by the end of 2011.
  • Expenses, 1 Billion US $ per year.
  • 3000 employees.
  • 10% of people have less than 10 friends, 20% have less than 25 friends, while 50% have over 100 friends.
  • Facebook's Datawarehousing Hadoop cluster gets 12 TB of compressed data per day, 800 TB of compressed data scanned per day, 25,000 map-reduce jobs per day, 65 millions files in HDFS and 30,000 simultaneous clients to the HDFS NameNode
  • Stores over 320 billion images, which translates to over 25 petabytes of data
  • Users upload one billion new photos (~60 terabytes) each week
  • In June 2011, Facebook hit one trillion page views that month, with 870 million unique visitors for the same period, giving the site a staggering 46.9% reach among all web surfers.


  Microsoft
  • 330 Million Hotmail users.
  • 90,000 employees.
  • Bought Skype for $8.5 Billion.
  • In June 2011, Microsoft hit with 250 million unique visitors, giving the site a 14.5% reach among all web surfers.
  • In June 2011, MSN hit with 440 million unique visitors, giving the site a 25.8% reach among all web surfers.


  Google
  • 260 Million GMail users.
  • 62 Million Google+ users.
  • 31,000 employees.
  • Britney Spears has the highest number of followers in Google+ with 1,096,945 followers while Larry Page is the second.
  • In June 2011, YouTube hit with 800 million unique visitors, giving the site a 46.8% reach among all web surfers.
  • In June 2011, Blogspot hit with 340 million unique visitors, giving the site a 19.6% reach among all web surfers.


  Twitter
  • 250 Million Tweets per day.
  • 100 Million users.
  • 400 employees.
  • In June 2011, Twitter hit with 160 million unique visitors, giving the site a 9.3% reach among all web surfers.


  Yahoo
  • 302 Million users.
  • 14,000 employees.
  • 42,000 nodes in the Hadoop cluster.
  • Flickr stores more than 5 Billion photos.
  • Flickr gets 100,000 queries per second.
  • In June 2011, Yahoo hit with 590 million unique visitors, giving the site a 34.4% reach among all web surfers.


  Apple
  • 61,000 employees.
  • 500,000+ apps available in Apple App Store
  • 18,000,000,000 downloads from the Apple App Store
  • iTunes Store had 225 million active users by June 2011