YouTube added video stabilization tool to new video editor.
And its super easy to use: Upload your video go to video editor and click "Stabilize".
It will take some time to process the video, but who cares... you can keep using your PC !!!, because all the work is done in the "cloud" :) No more After Effects Rendering :)
And YouTube lets you download your video ( if you didn't used any copyrighted music for it )
I think, that as fully automatic process, it do a very good job !
Here you some samples:
It have only one problem "fish-eye" videos from GoPro HD get a funny distortion :)
But it still looks good :)