Languages Used

These languages are used in these services

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

its an information for every one not a course content...