Why is this picture so popular?

Olympus E-P3 14-150mm zoom
Olympus E-P3 14-150mm zoom

Why is this picture so popular? Its got over 600 hits on flickr so far plus quite a few comments, and for what is a test shot I'm not sure why this is so. I was encouraged by the response to send it to a picture library and they seem to like it too. I'm often amazed as to what images get a good response and indeed sell.

This one is a real surprise.

Ann