Causes Continues Strong Growth Into This Week's List of Fastest-Gaining Facebook Apps by MAU

Venerable philanthropic app Causes has put in a second week of gains to head this week’s AppData list of fastest-growing Facebook apps by monthly active users. Although the app has topped 30 million MAU in the past — it’s now at 21 million — this is the first time it has shown a consistent climb past 20 million MAU in several months.