As a longtime Flickr fan and photographer of odd things, I'm excited about a new location-based game that integrates my kind of photography. It's called Noticings and it's all about sharing images of the things around you. Read Write Web calls it a Foursquare for photographers.
Players get points for things like being the first to notice something in a neighborhood or for noticing typos like this one:
It's easy to play along. Sign in with your Flickr account and make sure you're geo-tagging your photos and tagging them with "noticings." There's also a handy iPhone app that uploads your photos for you.
Once you start playing, check out the dashboard for recent activity. Points are calculated once a day at 15:00 GMT.
I love seeing new uses of social media tools out there and all in all, this appears to be a very cool use of Flickr's location API.