Copyright is tricky. It's hard to advise on it or blindly take someone else's advice. It takes research to determine for yourself what the liability is and how it applies to the images, sources, countries, and yourself. I've done tons of research for what I use. I've also got books on copyright law. It is important to be thorough and to keep up on the latest legal cases and rulings because it is a fluctuating issue. There's not a lot on the zazzle forums about it, but you can begin to learn about the complexities on the internet. It's a learning curve and takes that part of your brain that understands legal language and the current issues. If you're serious, then its worth the time.

Good luck and I hope this helps.

Hi, also, to Artsy Fartsy. I see your posts here and you're helpful and informative. As a newbie, I've found these forums very helpful. Thanks.