I would take a look at the graph on this site which displays some of the worlds largest websites and shows what they are built on

http://royal.pingdom.com/2007/08/22/what-nine-of-the-world%E2%80%99s-largest-websites-are-running-on/

And one other list which is pretty similar

http://blog.richardknop.com/2010/03/some-really-large-php-websites/

What largest websites are written in php?
If I flashback Past in Flames and it is countered by Cancel, is it exiled or put back into my graveyard?
