I hear also when you stop using Skype all your messages stay in Skype and do not magically transfer as SMS messages as Skype assume you are talking to other Skype users. The bastards. Same goes for Whats-app.
Honestly El Reg - do you people actually attempt to comprehend how things work rather than just diving straight in with the anti-apple diatribe? If you don't want your messages going via iMessage, Settings -> Messages -> iMessage -> Off. Was that so hard?