I try not to use "commercial" characters (though I have DLed a few to use in the Avengers vs. JLA contest - unfortunately several have included notes that they can't be used for "any kind of gain" or to that affect, and thus many figures - including most Batman ones! - aren't legal for the contest, it would seem); when I take a character from the 3DCC site, it's usually to either see how something was done on the texture, or because it had a prop I needed for one of my own characters; I also need to get in touch with Sharby about editing The Lizard to match someone else's character for a project...