Facebook didn't kill FriendFeed. Time did. In the face of a swirling industry with few viable revenue streams and chaotic user trends, it was always risky. That's why we love it. It's not safe. It trusts it's users to manage data flow.
While that's great for people willing to commit to that, the casual web moved on. It's ok. Given the length of time since the Facebook purchase, who's to say they didn't extend the life. Plenty of networks fall over or shutter early but this one is gliding gracefully. I would much rather they have to turn the servers off than just never getting them back up after a crash. - Johnny