Sometimes I get annoyed when I see my cel 
images used to make avatars or some such 
thing, but the thing is, if it's THAT bothersome, 
just email the person and ask them to remove 
the image. Chances are they will if they're a 
decent person. If they won't, there's not use 
bitching about it, because in the end, the 
artwork belongs to the studio that created. 

I think the only thing that really justifies such 
anger in regards to showing cel images 
would be if it was *your* original artwork that *
you* produced. Only then can your ownership 
of the image really be justified enough that 
you have a definite right to say "you can't use 
that image because it's mine."

Just my take...

- Riven