Geo-everything...
Lately, I have come accross many applications or ideas that combine geographic data with other information. People are talking about "geocasting" that is podcasts associated with geographical coordinates, geo-targeting in ads (this is old, I know) and now this: Mappr! Where It's At.
Mappr! is an application that tries to associate images from Flickr! with places (using flickr! tags). Nice and cool idea!