Lack of interest Images in Google search results

When I used phpBB and added images to posts there was a little box in which to write a comment about the image, google would find this and the image would show up in GoogleImage searches which matched all or part of the image comment.


Would it be possible to add a feature like this to the image upload area in Xenforo to make images posted show up in search results, this would create some more traffic to forums as people often search for media, such as GoogleImages.