"Doug, you do realize that our photos on Facebook can be downloaded by anyone. So they can be downloading your hi-res images!" - Yeah, you can but the one you download has been rescaled and compressed (to speed page delivery) so that it ends up being a relatively small file, eg., I just downloaded an image from FAA, posted on FB, about 5X8 on the page and it was only 173 Kb. That's the equivalent of a screen grabber, not a likely target for art thieves.