It is interesting how Flickr manages to direct one's type of photography and photographic subject. Flickr meets do this, but so do the various groups that you are invited to join.
For example, I have always enjoyed taking photos of bridges. But now I look for photo opportunities whenever I am near a bridge. Why? Because I belong to seven different bridge-related groups! And one of them is called bridgepixing, a word that is defined as "Specifically visiting a bridge to take photos of it from every available angle. Spending time at the bridge to feel its presence in its setting. Driving across a bridge and taking photos of it thru the windshield is not Bridgepixing."
This is clearly a good thing in that a simple walk in the park may become a source of inspiration prompted by such Flickr groups.