Buggle, games, file sharing, Etsy, more on this week’s top 20 emerging Facebook apps by MAU

Games dominated our list of emerging Facebook applications by monthly active users this week. Among the other applications were a document sharing service, Ustream’s livestreaming app, the Etsy integration and a French music site.

We define emerging applications as those that ended with between 100,000 and 1 million MAU in the past week. This week’s top apps grew from between 110,000 and 470,000 MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Top Gainers This Week