Excellent question -- in many, many cases I receive expressed written permission to display their works on my site. Many times artists reach out to me about showcasing their work (which I'm absolutely happy to do). Other times I simply can not reach certain artists -- many because their works are decades old and I strike out when trying to locate their contact info.
I do my best to celebrate the artists/writers and their incredible work, but if someone prefers not to have their work reflected on my site, then I certainly oblige.
