Yahoo has better safeguards [for sellers] than
evilBay now probably b/c of the problems - like 
requiring cc# to bid, etc. ^_^ 

Here's an idea - it's a PAIN, but it might be 
worth it. 

If you have a simple paint program (well, one 
that supports percent-transparency), edit all your
high-ticket images - I'm not talking about just 
"stamping" with your URL - I mean if you're 
selling, place text on the image stating something
like "not for auction." If you then go to auction,
type the AUCTION#, DATES, and maybe your ID on 
the image itself.

It's easy to rip off images - heck, bandwidth 
steal - but more work to remove text without the 
image looking like crap. 

*If you would like this and do not have the means,
I would be willing to donate my time to do this 
for you.* (Contact me via the GIC forms from my 
site.)