Today's tip (from Laos): Add a sense of motion to your still images.
Experiment with different slow shutter speeds to blur the movement in a scene in which the subjects are moving. You have probably seen this effect in National Geographic magazine.
I took the opening photograph for this post at 1/30th of a second. It has a much greater sense of motion than the above photograph.
Use your camera's LCD monitor to check the areas of the scene you want blurred . . . and sharp.
Also keep this in mind: the closer you are to the subject, the more it will be blurred.
I took this photograph with my Canon EOS 7D and what is becoming one of my favorite city-shooting lenses, the Canon 14mm lens.
Explore the light,
P.S. If you travel with an iPhone, check out my 24/7 Photo Buffet app. Tons of travel photo tips.