But how do you know when or where an image or photo you created and uploaded to your blog, website or social media page is then taken and re-used by someone else? There are millions of sites out there. Your images could be anywhere, masquerading as someone else's creative talent, or simply used without any reference to you as the creator and copyright holder.
Of course I've tried this with one of my own illustrations, fully expecting to find my artwork on a heap of sites. It turned up on three: here on my blog, my website and the third was the blog of a friend of mine. That was fine with me, but she did forget to reference the image with my full name and a link to my website - online etiquette. If she had, it would've turned up on the Google Alert I have out on my own name and I would've been informed by email - another handy Google tool.
Have a go at searching for your own images and then come back and leave a comment on whether you found anything. Perhaps you'll uncover a following you didn't know you had or ... a den of online thieves!