Most of the existing threads about fakes seem to include links to eBay auctions which have long expired. Here is one of my very first forum contributions, and surprisingly enough, the pictures are still there! (not eBay, though -- my own):

Fake gold 10 rouble 1899 gold

Anyone who spots a fake is encouraged to save the images to his or her PC locally, then upload them somewhere where they will not automatically disappear after 60 days, then attach them to their message. That way, we will establish some kind of reference here.