Go, Read: Slate On Those Sourced-Out Liefeld Comics
There's a fun article here on the recent comic book series that Rob Liefeld allowed younger creators to refashion. It also includes a great Rob Liefeld quote from Rob Liefeld. It's a bit weird to see this kind of thing portrayed as some sort of unique victory for allowing others to work on your characters. I actually don't see how this is either a novel thing or how it relates to more aggressive open-sourcing beliefs and/or practices. I like those comics, though; hard not to if you're generally inclined towards that kind of work.