Well, you don't mention what about your interface concerns you, or rather, what you think might make someone mad enough to sue you.
But regardless, it would not be wise to follow legal advice from a discussion forum
Laws vary from country to country, and there are even variations in law within country's jurisdictions. If you are concerned about legal consequences for an act, talk to a lawyer. Only a lawyer will have the expertise and/or knowledge to give you an educated
answer. Anything else is just a guess, and telling a court "Dark_Helmet on LinuxQuestions.org said it was ok" isn't going to be very persuasive