[zenhack]

I think you're right that most folks don't have as detailed a definition in mind as the fairly verbose open source definition.

But I think most folks have in mind something more permissive than just being able to /view/ the source. In particular, being able to modify, run, and redistribute are also essential (the fsf's four freedoms get closer to the heart of the matter).

I think "you can't use it to do X" disqualifies the license, though in this case I'm not sure how much I care, since it's prohibiting things that are illegal where I am anyway (maybe if your country doesn't have a dmca equivalent it might matter).