That one is huge. Not just in pixels, but in actual file size. It ended up being 352k by the time my browser downloaded it to my desktop. That's just, ummm, outrageous.
Without changing the pixel size at all, you can have this one at a substantially smaller file size (around 60k):
http://www.darkbox.com/mustang/linkpix/others/ShanMan.jpg
If you reduce the pixel size by half, you get this one, at around 30k:
http://www.darkbox.com/mustang/linkpix/others/ShanMan_small.jpg