Over at i09.com, Ria Misra hosted Georgetown law professor Rebecca Tushnet in an excellent discussion about the future of transformative works, notably fan fiction and mashups. The site's readers posted questions to Tushnet, which she responded to in depth — this was no rapid-fire Reddit AMA. Given io9's focus on science fiction, it's no surprise that enterprises like Kindle Worlds, which is an interesting attempt to monetize fan fiction, got a lot of of attention. Music comes up in the conversation is as legal model or metaphor. One reader asked, for example, if music sampling might provide a "licensing scheme" for fictional characters (i.e., can I pay a set amount to write Wolverine into my novel?) — Tushnet is not convinced the idea will work. More on her work at the Organization for Transformative Works (transformativeworks.org).