As vain as I am, I do an occasional google search for my name to see what comes up. I found, in my most recent adventure, a site that posted hi-res images of all of my blog work. I felt a little assaulted to be honest. After a scathing email, they took my stuff off, but I also found Sam Nielson's work and Ryan Wood art there too. If you have issues with other people making money off of your work without compensation to you, check mdolla.com and you just might be there.
As for Superman, my nephew likes Superman so here you go