www.json.org/license.html
It might be nice to have a chuckle about "do no evil" in a copyright licence, but that's a massive loophole that the original author could use to stop almost anyone from using their software.
Well, to be specific, there is no clause that prevents you from kicking the puppy yourself just for the hell of it. There is a clause that prevents you from using 'the software' to kick a puppy, assuming 'kick a puppy' qualifies as evil.
Also gullible is not written on my ceiling.
Sometimes I think I'd like to release under a "you cannot use software patents in anger" license that restricts behavior outside of the software usage. But that's probably too restrictive to catch on.
This will surely earn them some cred from the programming community.