Is it possible that some make a extension whit a download button for downloading a image file so the imge file will be display like 600 x 800 file size and the button only show up when members are in the donor group.
Whit some information from the image like:
how many times the image has been downloaded,
in witch group it is,
what size it is,
and at the bottom tekst where the username is displayed who downloaded the file like this postername has been thanked by: downloadername.