What's the biggest online application you know that runs on CodeIgniter?

[eluser]KeyStroke[/eluser]
Hi,

I've been trying to convince a friend of mine (developer) to use CodeIgniter for a project, but he thinks it's "just for small projects".

So do you know any big online application that runs on CodeIgniter so I can show it to him? I'm interested myself to see how CI performs in bigger applications.

Appreciate your input