Man, and I thought programming had difficult edge cases :)

From this post and the article you linked above, the takeaway I get is to ask everyday "Are you following the contract?" I understand the legal definition, but I gather that the layman will still think it's fraud.

I guess a simple solution in that scenario would be to have a checkbox asking are you following the contract every time they login to the server.

Thanks, I learned a lot from you! :D