The fancel artist should ALWAYS sign their work, 
but putting it somewhere noticeable can prove 
rather difficult, because of the buyer.  Lots of 
people don't want a signature on the front for 
some reason...So, it can get tricky.  Some sign 
their work on the back, and if punks like that 
auctioneer get ideas, well it's going to give 
them all the better chance to get away with it.

I'd really like fancel artists to sign the front 
of the image, under the paint in a corner.  They 
could etend the image somehow to be able to add 
their signature.  Doing that would make it more 
difficult for people to sell as originals.  And 
if they try some hairbrain scheme to cut that 
portion off the cel...Well...Anyone will be able 
to recognize that.

But...There's lots of possibilities and outcomes 
with this matter.  I just think people need to be 
on their toes in the community and if they see 
stuff like this going on...Inform everyone 
through this board.  Trust me, proper steps will 
be taken to make sure the problems resolved.

Just to show what I mean by putting their 
signature under the paint...

Here is my fav. artist Gwen's work.  She signed 
her name under the pain withing the image in the 
lower left corner, and then what is even 
spiffier, she signed her name in kanji under the 
guys arm to blend in with the rest of the scene.  
Pretty spiffy, ne?