Hi, I just put this together quickly to see what it feels like when used on a web page rather than an artificial environment, it wasn't intended as a fully featured interaction method.
In fact even while playing around with it myself I found it frustrating that I couldn't click anywhere without following a link, and you're right that the implementation is very naive. This was just a bit of fun which I wanted to put out there. Hopefully that explains why it isn't perfect :)
Wasn't a rant against your implementation, just that every one I've seen is a mirror image of the others, with only one variable: whether your pointer determines an edge of the circle - thereby making it harder to determine where it'll jump to - or it determines the center of the circle - making it harder to aim. There's gotta be a better way, because the concept is excellent.
In fact even while playing around with it myself I found it frustrating that I couldn't click anywhere without following a link, and you're right that the implementation is very naive. This was just a bit of fun which I wanted to put out there. Hopefully that explains why it isn't perfect :)