Programming languages used in most popular websites

Now a days many of us are very much connected to internet.And below are the websites that are connecting us.here is the programming languages which are used by these websites both client-side and server-side
1.Google.com

    Client  side:  JavaScript
    Server side:  C, C++, Go, Java, Python
2.Facebook.com

     
Client  side:  JavaScript 
Server side:  Hack, PHP, C++, Java, Python, Erlang, D, Xhp
 3.YouTube.com

       
 Client  side:  JavaScript,Flash
 Server side:  C/C++, Python, Java
 4.Yahoo.com

 Client  side:   JavaScript
 Server side:  PHP
 5.Live.com

 Client  side:    JavaScript
 Server side:    ASP.NET
 6.MSN.com

 Client  side:   JavaScript
 Server side:  ASP.NET
  7.Wikipedia.org

 Client  side:  JavaScript
 Server side:  PHP
  8.Blogger.com
                             

 Client side: JavaScript
 Server side: Python
 9.Bing.com

 Client side:   JavaScript
 Server side:  ASP.NET
 10.Twitter.com

 Client  side:   JavaScript
 Server side:   C++, Java, Scala, Ruby on Rails
 11.Wordpress.com

 Client  side: JavaScript 
 Server side: PHP
 12.Amazon.com

 
 Client  side:   JavaScript
 Server side: Java, J2EE, C++, Perl
13.eBay.com

 Client  side:   JavaScript
 Server side:  Java
 14.Linkedin.com

 Client  side:   JavaScript
 Server side:   Java, Scala, JavaScript (Node.js)
       let me tell you Client side nothing but user's side(front-end) i.e.,we will be using mostly java Script to view these websites.and Server side means company's side(back-end)..
    I have collected these information from wikipedia..