Make it a geoblogging(moblogging) site for Americans in foreign countries; Find americans in Spain, France,Germany, etc. during a big event like the olympic games, a business tour or holidays.
For more info on moblogging: www.farcast.eu ( they have to work on mobile to mobile)
-Tourist sites
-Restaurants
-Arts and Crafts (focusing on Made in America)
-Musicians
-Artists
-Writers
-Entertainment Gossip
-Medical Breakthroughs
-Tech Innovations
-Charities (positive American contributions at home and abroad)
-Fascinating Facts (historical/political/geographical)
-Map links
You could offer original artists works for sale; point to artsy towns (See The 100 Best Art Towns in America: A Guide to Galleries, Museums, Festivals, Lodging and Dining, Fourth Edition, http://www.amazon.com/100-Best-Art-Towns-America/dp/0881506419).