It's actually one of my older photos, taken on my D3000. I'd probably have cleaned it up more these days but it clearly someone felt that it was good enough. Also I'm cheap! :D
Take a look at the above shot. Those flecks dominating the top right corner of the frame are sadly not a feature of the instagram-style filter I sadly had to use to make the shot even remotely work. Yes, I had crap on my lens. Normally this wouldn't be too much of a problem because at typical exposure, there's enough light coming through the lens to eradicate it but for a HDR shot, the underexposed frames are already limiting the light coming into the lens so the specks show up more. The HDR software then picks up on these details out and exacerbates the effect.