Websites where you can upload GIF's

z-up.net
freeimagehosting.net
Compiler: gickr.com
online GIF animator: http://www.pixeljoint.com/2007/08/12/2277/Online_GIF_Animator.htm
Downloaded GIF creator: http://gif-compiler.qarchive.org/
Another Downloaded GIF creator: http://www.falcoware.com/FalcoGIFAnimator.php

How do planes fly?

It's a bit laggy because of the file size.