You have a good eye for angles and lines. After looking at this image and some of your other recent images I am noticed that the lines in your images look very jagged. How are you resizing your photos?
The forum is just resizing his images down, without resampling them so you get the jaggies.
I love the square framing with this, it works great along with all the geometrics in the image. The blank billboard reflection is mildly humorous, and a nice contrast to the strong geometrics. For future reference, photosapien must size down images larger than 700px wide, to 700px. I would suggest sizing yours down beforehand, to avoid the nasty jaggies HTML resizing will give your image. Either that or an external link.