Flickr Mashups

I played with Fastr. It's pretty cool. A group of Flickr photos appears on the screen, one at a time. The challenge is to try to figure out as quickly as possible what tag they all have in common. The photos aren't very big so it's really hard in some of them to even see what the picture is of. Given my tendency to get hooked on puzzle type games, I can see how I might get hooked on this one!