Christmas, Calendars, Cards, Photos, Tabs and More on This Week’s Top 20 Emerging Facebook Apps by MAU

A Christmas application topped our list of emerging Facebook apps by monthly active users this week. Calendar apps, greeting cards and a mixed bag of others rounded out our list. The apps on our list grew from between 110,000 and 520,000 MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook. We define emerging applications as those that ended with between 100,000 and 1 million MAU in the past week.