A wonderful idea! It's called "The Game of Noticings".
In the Game of Noticings, you walk around places, you notice things, you take photos of them, and you upload them on to flickr. It's a game, so it's competitive, but in a strange and random way. You get points for noticing something in a place where no one has noticed anything before, noticing something in a place near where someone else has noticed something, noticing something red, or noticing things every day for a week.
In essence, it's a fancy name for taking photos of quirky things and uploading them. But what makes it brilliant is the name, which acts as a reminder of what photography is really all about. Writing, too, is about being struck by things instead of glossing over them. Someone once called the New York journalist and short story writer Joseph Mitchell a "virtuoso noticer" of everyday life, and that sums it up.
As it happens, I'm famous in some quarters for failing to be struck by anything at all. I didn't notice for months on end that my house was covered in scaffolding. You even had to bend your head to get in through the door, but it didn't register with me. But never mind that. I still believe in noticing as an ideal .. perhaps all the more so because I forget to do it.
So - I'm off to flickr to register myself (and my trusty little camera) as a competitive noticer. Let's see how I do..