If a picture is worth a thousand words, a video is worth at least ten thousand. So here is a video that one of the Stanford d. School teams did about their mash-up between GlobalGiving and Google maps. There are two things I like about this team's work: the mash-up itself, and the video they did explaining how the mash-up works:
Note: Here are some posts on other teams' projects:
You Did THAT in Four Weeks?
You Can't Eat a Pedicure
Peace Corps Widget