I am a new user of Smush.it and am trying to understand how to use it.
1. If I smush an image that has already been inserted in a post, do I then have to go re-insert it into the post so that it is using the smushed version?
2. What if I am uploading the images to Amazon S3 Cloudfront? Will Smush.it be able to smush those images as well?