Bike Nation World Map
Image by Richard Masoner / Cyclelicious
Flickr gives you the capability to quickly geotag your photos. If you use the Flickr Organizer to do this, your photo will appear on the Map for whatever group(s) your photo belongs to.
Login to Flickr, click "Organizer" from the menu at the top of the web page. Select the "Map" tab. Wait a moment for everything to load and you’ll see a selection of your photos along the bottom of the screen and the map across the top. Find your location in the map, then drag and drop your thumbnail photos to the location.
Any photos that belong to a group will automatically appear on that groups map page. The Bike Nation Map, for example, is is here.