I think this is a disturbing development. While a slight plus might be that this adds an incentive to support modding on more games, I see more negatives... Should modders now start adding licenses to their mods to guard their creations from (illegal) exploitation of their creations? If so, which licenses are most conductive to the "old" modding environment and block any unauthorized commercial use? When it was a free/donation-only environment at least it all felt "fair"... Sure, you could take parts of a mod, but so could anyone else (and you generally just asked permission, and usually got it); the end result being a general trend towards (hopefully) better and more complex mods. What if I release a modders resource and someone decides to use this in a paid-for mod do they now owe me money? What if someone re-uses a part of another mod? I fear this will fragment the modding community. Looking at some of the prices on the mods currently available I find the whole thing disgusting, frankly.