Moving avatars—are they bad?

I really want something new, and my gif collection is calling to me. But I suspect it's too distracting to have a bunch of motion in your avatar, right? Give me your opinions on this vitally important etiquette issue, Clashtalk!

ETA: Never mind. Back to the drawing board I go. (Still, feel free to opine about moving gif avatars to your heart's content here.)