Freeloading

I do release a lot of content, from drawings and clipart to photography and to videos and learned about many people using them, this always brings a smile on my face. But it can be otherwise :) Today I got a question about some of my clipart being used on some website, but with a twist: I am asked if credit is needed, as in such case the site owner has to adjust the layout to fit it, needing to think about that. My answer was dry "Since those clipart images are released into Public Domain, crediting is not compulsory, that's the license. Is up to you." opposed to an usual "the images are released into the Public Domain, you can use them in any way you want. credit is not required but is appreciated". Indeed, I released the stuff freely, no restriction can be imposed afterwards. But I can contemplate the laziness and freeloading. And smile.