I've seen a few already in comments on my newsfeed. Surprisingly, it seems a little more streamlined than on tumblr. Can't help but wonder how my grandma is going to embrace gifs.
Reading the title, I was worried for a moment that I had clicked through a time portal. GIFs. Aren't they as old as CompuServe?
Then I read the body text, thinking: "Do I know anyone who hasn't turned off GIF animation in their browser yet?"