I'm quite sure he HEARS them...I just hope he doesn't ANSWER them, all things considered.
You can't really mean this. Most of the prayers prayed by Muslims are probably things like "God, preserve the health of my family". You WANT God to deny those prayers because those Muslims have some incorrect ideas about him?
Everyone on this thread should read C.S. Lewis's "The Last Battle" (the parts about Emeth the Calormene especially).