I agree with Andreas here....the exif data can be used to help prove ownership. But keeping the RAW file is even better in cases where proof is required.....you should NEVER give away your RAW file.
Further, posting the exif data doesn't really help for critiques either....as it is not indicative of any processing done to the posted image.

@Andreas....I hope that you have provided ripping proof to the mods here so that this habit does not continue.....

BTW, I only comment when I have the time....which, unfortunately is not that often.  When I do have the time to browse, I will go through the gallery, scan each thumb and then click on the one that appeals to me...some get a comment, some don't.  There are a few folks whose work I really enjoy..and I will check on their work.  I also try to view the weekly gallery summary.

In youth, we learn....with age, we understand.