There are some very cool sites that intergrate into Flickr, but if you are looking for one that will get you out there exploring, this has to be one of the better ones. It is a bit buggy at the moment, so I wouldn’t be purchasing the iPhone app just yet.
Here is a bit of an explanation from their site.
What is Noticings?
Noticings is a game about learning to look at the world around you.
Cities are wonderful places, and everybody finds different things in them. Some of us like to take pictures of interesting, unusual, or beautiful things we see, but many of use are moving so fast through the urban landscape we don’t take in the things around us.
Noticings is a game you play by going a bit slower, and having a look around you. It doesn’t require you change your behaviour significantly, or interrupt your routine: you just take photographs of things that you think are interesting, or things you see. You’ll get points for just noticing things, and you might get bonuses for interesting coincidences.
So if you have lost you phojo of late, maybe had a crack at noticings. A novel and interesting concept.