It's in the Apple App Store ( http://itunes.apple.com/app/classicmap/id566173771?mt=8 ). I presume that means Apple have looked at it, and approved it, and it won't be yanked in a while for breaking any terms of service,
1) Because there's very little evidence that malicious applications are successfully filtered (many get in), and much evidence that nitpicky comments keep 'good' applications waiting.
Don't know about no 1 but Google's TOS explicitly forbids the rendering of Google tiles outside a Google application, you can only use them in conjunction with Google's own Maps API.
right?