An expat is a person temporarily or permanently residing in a country and culture other than that of the person's upbringing. (http://en.wikipedia.org/wiki/Expatriate)
An example of an expat would be Ingrid, a teacher from Sweden, going to Uganda to voluntarily work in a rural school. During her stay, she stumbles upon Makapads, locally made sanitary napkins made of papyrus. She takes a photo and keeps for herself. Wouldn't you want to see it?
'Expats as world benefit agents' gives opportunity for people like Ingrid to upload, tag location and give information on activities and products with a social impact they find out in their neighborhood. A combination of treehugger, instagram and foursquare, the service provides a digital platform for the unrevealed knowledge to be pointed out and spread. Expats community is an ubiquitous target group with the potential of being reached and organized as agents.
The most powerful tool of the platform is the interactive world map which visualizes the location data, photos/videos, and a description of all world beneficial activities tagged by the agents.