Facebook No Longer Supports IE7.
Although the article focuses on what actually happens, how to check it out on your own, and how to get around it if for some reason you’re determined to stick with it, I’m most excited that a site the size of Facebook appears to have dropped IE7.
It’s an effective way to get less than tech-savvy people to upgrade, deny a new feature on an ultra popular website.
I still don’t use Facebook and have no intention of doing so, but find it important enough to get a high level view of what’s going on in that world from time to time.