I sometimes wondered about how Rawl's philosophy would apply to certain contemporary issues and how the general approach can be reconcile with the specificity of the concern.
I say sometimes, because I didn't think about Rawls at all when reading about permissive licensing versus copyleft. But then, I found a most cogent argument in favor of copyleft, and it used the exact argument that Rawls made: "what is the better option for EVERYONE?":
"People who really care about freedom care about it for EVERYONE, and licensing that maximizes freedom for everyone trumps the "strings attached" in that regard, that is such a simple thing to see that it challenges credulity to think that someone who cares about freedom could say otherwise."