Languages Used to make Google,Facebook etc:

Languages Used....
1. Google – Java (Web), –C++ (indexing).
2. Facebook – PHP.
3. YouTube- Flash, Python, Java.
4. Yahoo– PHP and Java. 5. Microsoft Live.com–.NET
6. Baidu – Unknown
7. Wikipedia – PHP
8. Blogger – Java
9. MSN – .NET
10.Twitter – Ruby on Rails, Scala, Java