Firing up an app to talk to a bot isn’t copyright infringement. The app will talk to whoever will chat with it (and vice versa, in terms of CleverBot). Recording this interaction doesn’t violate Outfit7’s copyright anymore than someone recording their siblings/kids talking to it. The app exists to talk and presumably Outfit7 would like more people to download the Talking Angela app because in-app purchases is a numbers game. The more people that try it out, the more likely the chance that some of them will start tossing money into the company’s revenue stream.