tarotbear
I think that the spread just may in fact be copyrighted. As I mentioned earlier, it appeared in an e-book published by AT. I did some research just now and I found that those e-books do say copyright by Aeclectic Tarot. The spread also appeared in the e-magazine of the American Tarot Association. I think it's called Tarot Reflections. And I am reasonably certain that that's copyright also. Can the rules be different just because this stuff is on the internet? I don't see why they should be. Copyright is copyright.
I think the place to start is to contact the person/site who is posting it and explain this to them and politely ask to 'be given credit where credit is due.' It can't hurt and they may be glad to do it; far simpler that retaining a lawyer. You should also contact the ATA and let them know about it, too.
I do tend to believe, though, that once you put ANYTHING on the Internet you will never get credit for it; if you don't want it stolen - don't put it up. This is why I only put a limited amount of my Everyman Tarot cards on the Internet - so that someone doesn't download them and print it off themselves.
Just last week in a restaurant I overheard someone at the next table comment that she found her book (or maybe eBook) was being GIVEN AWAY FOR FREE by a third party. I introduced myself and interrupted her conversation and told her if her book is being published that she needs to contact the publisher right away. She seemed hesitant. I said "It's not just affecting your royalties - it is affecting the sales and your Publisher has a right to know why 'your book isn't selling.' They are losing the royalty, too!" All she has to do is call or email her publisher first...but it took a lot of convincing on my part.
Stand up for your rights!