I had an interesting idea that I'll have to look into and get back to you lot with.
If it works it could stop them outright.
(
riverghost servicing your mum since,
Tue 8 May 2007, 11:09,
archived)
the other thing which
will not help in the legal area but certainly help in claiming ownershaip of the original ( should your PSD get lost ) is to buy a Digimarc licence and electronicly tag your images.
(
Pasanonic 's been known to cause insanity in laboratory mice,
Tue 8 May 2007, 11:25,
archived)