I use StumbleUpon on occasion. These are photos I've found recently:

Vivid black-light dance, I think: [link]
Sailing the sand...a photo manipulation: [link]
Hello Kitty: [link]
Lights on the horizon: [link]
Bestest friends: [link]
E=MCFun: [link]
Nasty, beautiful, weather: [link]
Lighting umbrellas: [link]
A concept, but interesting nonetheless: [link]
Boys will be boys!: [link]
Classic swing: [link]
This looks cold: [link]
Sometimes you just need a nap: [link]
Golden beauty: [link]
Amazing hummingbird shot: [link]
Man or orangutan? [link]
Eagle or swan...who wins? [link]
Look at Fred's work: [link]