Yahoo Toolbar, How Hipster Are You, Smule, Dove sweepstakes, more on this week’s top 20 emerging Facebook apps

Yahoo! Toolbar led our list of emerging applications by monthly active users this week.

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 between 130,000 and 720,000 MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Top Gainers This Week

1. Yahoo! Toolbar840,000+720,000  + 600%
2. How Hipster Are You?630,000+626,000  + 15,650%
3. Smule670,000+400,000  + 148%
4. SimCity Social: Get free stuff950,000+370,000  + 64%
5. Custom Tab | Star #3940,000+260,000  + 38%
6. Relationship Status Analysis?650,000+210,000  + 48%
7. HTML Page Tab #10820,000+210,000  + 34%
8. HTML Page Tab #6820,000+210,000  + 34%
9. Embassy Suites 366 Days of More Sweepstakes220,000+200,000  + 1,000%
10. Bubble Raider520,000+180,000  + 53%
11. Songza540,000+180,000  + 50%
12. Static HTML… [Ninth Tab]560,000+180,000  + 47%
13. Preguntas y Respuestas440,000+160,000  + 57%
14. YOU DON’T KNOW JACK220,000+150,000  + 214%
15. Dove Men+Care – Dadism Sweeps170,000+140,000  + 467%
16. Hier Zukunftsdaten abholen!210,000+140,000  + 200%
17. Veetle370,000+140,000  + 61%
18. Dungeon Blitz380,000+140,000  + 58%
19. Opera Mini510,000+130,000  + 34%
20. Woobox Custom Tab | Arrow #5510,000+130,000  + 34%

Yahoo! Toolbar is a browser extension for Internet Explorer and Firefox that gives users quick access to email, weather, stock reports and Facebook. The Facebook integration brings in a user’s News Feed, profile and notifications.

No. 2 How Hipster Are You? is a quiz app that includes a series of questions to determine a user’s “hipster” percentage. The app has grown incredibly quickly from users posting their results to Timeline and friends seeing the activity in News Feed.

Smule is a mobile developer that seems to have a number of music apps under the same Facebook app ID.

Three promotional tab applications made the list: No. 4 SimCity Social: Get free stuff, No. 9 Embassy Suites 366 Days of More Sweepstakes and No. 15 Dove Men+Care – Dadism Sweeps.

Other top emerging apps included a number of customizable tab builder applications from Woobox and Thunderpenny.

All data in this post comes from our traffic tracking service, AppData. Stay tuned next week for our look at the top weekly gainers by monthly active users on Monday, the top weekly gainers by daily active users on Wednesday, and the top emerging apps on Friday.