lucy24 - 1:07 am on Jun 5, 2012 (gmt 0)
You could block the free-standing images from Image Search-- which never shows them at full size anyway-- and allow only the thumbnail versions. That way people could never land on your big images "cold", but only via the proper link.
You may or may not want to block non-referer or cookieless humans from seeing the picture. Fine if they've got it bookmarked and started out visiting it by official means, but otherwise iffy. Do you have much of a hotlink problem? So far, that's been my sole reason for blocking areas from Image Search.
Oh. Oops. You were asking about g###. I was thinking of humans. Never mind then.