Spotify, a music streaming service is the No. 8 bestselling Facebook app for the week, according to research from AppData. The music app, which competes with Pandora and Songza, has seen 24,600,000 average monthly users this month, according to AppData.

Below, we’ve listed the top free Facebook apps of the week. The list links to Inside Network’s research about the individual apps, including historical charts, developer information and download information.

To prepare for Mediabistro’s upcoming Media App Summit on December 4, 2012, we spotlight the top free apps every week–helping our readers discover, enjoy and analyze successful content.

Top Free Facebook Apps of the Week (with Monthly Active Users Count)

1. Socialcam 54,700,000
2. TripAdvisor™ 36,800,000
3. Yahoo! Social Bar 35,500,000
4. Texas HoldEm Poker 34,500,000
5. Bubble Safari 29,500,000
6. Bing 24,900,000
7. MyCalendar – Birthdays 24,900,000
8. Spotify 24,600,000
9. Microsoft Live 24,400,000
10. CityVille 24,300,000

More detailed stats are available at AppData Pro, Inside Network’s data service supplying performance data, including historical user data, audience demographics, and company information for developers and applications.