Please use silent HTML5 videos instead of animated GIFs wherever possible. They are much more bandwidth- and CPU-efficient. This site allows you to automatically upload/convert animated GIFs into that format: http://gfycat.com/ The links allow you to see the animated GIFs as well, if viewer's device doesn't support HTML5.
What we need is an image container format that allows for a silent (and only silent) video stream to be embedded. A better GIF. Something that site maintainers would feel entirely comfortable in allowing.