Here is a list of those Popular Branded Websites Who are Using WordPress as Platform
Yahoo! uses WordPress as their platform
Yahoo! uses WordPress, they have their custom theme and setup.
Ebay uses WordPress as their Platform
After knowing that Ebay is actually powered by WordPress, you will understand each product page, is actually a custom type post!
Sony uses WordPress as their Platform
Impossible to guess it, right?
The New York Times is Powered by WordPress
It can be guessed from the structure though.
Nokia Conversations is powered by WordPress
Who is left to use WordPress?
Come on, we have more! Digg uses WordPress too
Do not stop reading here!
Samsung uses WordPress as their platform
Have a break : WordPress is Powered by Matt!
Almost all big brands are actually powered by WordPress, which has powered Matt.
CNN is powered by WordPress too
May be they are using the same plugins we use too!
Ford is powered by WordPress