"International Cat Day started in the year 2002. It was created to shed light on the various forms of cat abuse and raise awareness on ways to help and protect them. This year's theme is "Cat-friendly resources." Take the chance to donate to your local animal shelter or adopt a stray cat to commemorate this August 8."
On Twitter there's a cat reviewer site where people put up photos of random cats they meet on the street and award them marks out of ten for various daft things. It's very entertaining.