You cartoons are on Pinterest and other social media. Can they be shared on my business pages?

If my cartoons appear on Pinterest, those are there only for search engine optimization and to give visibility to my domain via my website name DansCartoons appearing inline with the various cartoons. If a business or commercial Pinterest page wants to share my cartoons, please email me directly if you want to license any of my cartoons on your pages or any other social media streams you have.
I spend a considerable amount of time writing, drawing and inking in all of my artwork. This includes marketing the work in various ways, such as promoting on social media.