Careers app Silp led our list of emerging Facebook applications by monthly active users this week with 1,539 percent gain.

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 100,000 and 385,000 MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Top Gainers This Week

Name MAU Gain Gain % 1.  Silp 410,000 +384,980   + 1,539% 2.  Keek 650,000 +330,000   + 103% 3.  Olympic Games City 480,000 +320,000   + 200% 4.  Puzzle Chasers 370,000 +280,000   + 311% 5.  Telly 370,000 +240,000   + 185% 6.  MyLife.com 670,000 +220,000   + 49% 7.  MTV.com 430,000 +210,000   + 95% 8.  Hollywood Slots 860,000 +180,000   + 26% 9.  Magic Valley 200,000 +160,599   + 408% 10.  Static HTML… [Tenth Tab] 780,000 +160,000   + 26% 11.  Woobox Custom Tab | Arrow #4 910,000 +150,000   + 21% 12.  ★ Photo of the day 180,000 +149,824   + 497% 13.  TDP4 Team Battle 630,000 +140,000   + 29% 14.  Lost Legacies 480,000 +130,000   + 37% 15.  Sweepstakes 210,000 +120,000   + 133% 16.  Dreamland 160,000 +115,351   + 258% 17.  Spa Life 200,000 +110,000   + 186% 18.  The Sims 3 580,000 +110,000   + 23% 19.  Super Mari0 400,000 +100,000   + 33% 20.  Winner Super Slots 650,000 +100,000   + 20%

Mobile video sharing app Keek came in at No. 2. No. 3 Olympic Games City is the the official social game of the London 2012 Olympic Games. Our sister site Inside Social Games reviewed the citybuilder earlier this week and gave it a “skip” rating.

No. 5 Telly, which appears to be a Pinterest-style site for saving and sharing video, has grown quickly in the past week. No. 6 MyLife.com pulls together all of users’ email messages and social network updates in one dashboard.

MTV.com, which integrated Facebook Open Graph sharing a few months ago, nearly doubled its MAU to reach No. 7.

Games and a few tab applications filled out the rest of our list.

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.