we're using thumbshots.org to display thumbnails in our webapp, and we just found that :
http://open.thumbshots.org/image.pxf?url=http%3A%2F%2Fgroups.google.fr%2Fgroup%2Feurochemicwolff or
http://open.thumbshots.org/image.pxf?url=http%3A%2F%2Fgroups.google.fr%2Fgroup%2Fandroid-beginners
or any other google group (we guess) and maybe others ? returns a porn picture
can you check what's wrong ? is it your side, or is it google groups side ? thank you