I use my photo organizing software (Thumbs Plus) to do that too. When share a hardcopy of a photograph, I can generate an image with a border that includes the metadata. That's what I do when I print copies for relatives. That way, the recipient can paste it into an album or pass it along to some one else with the critial information.
I'm finding it more important to include the metadata for photographic images in the image itself than in the image's formally defined metadata.
The technique is described in this article. I've been using ThumbsPlus for over a decade so when I saw the article a few years ago, I decided to do a little experimenting with it and it works reasonably well. I do have some enhancement requests in with Cerious to improve it but Breeze Browser doesn't do any better.