Ask HN: What "big" sites don't officially support IE7 now?

I am trying to compile a list of some "bigger" (more popular on the web) sites that no longer support IE7 or possible if they no longer even support IE8 (which I don't think I have seen but I'm not sure). I know have seen more in the news recently about IE7 but I couldn't remember which ones specifically. Thanks for any help.