Top 10 websites built with PHP technology !

There are 82% websites are developed using php. Php have many framework so different websites are using different -different framework.
Below are the top 10 websites which are built with php technology.

Facebook
Wikipedia
Yahoo
Flickr
Wordpress
Tumblr
Friendster
Istockphoto
sourceforge .net
PolicyMantra

It is a mix of popularity and traffic :)