This document summarizes the most popular, regularly used, and fastest growing Facebook applications, integrations, developers, and brand pages as of March 17, 2011. It lists the top 10 applications and integrations by popularity and fastest growth, as well as the top developers and most popular and fastest growing brand pages according to different Facebook data sources. Contact information is also provided for further questions.

1. What's hot on Facebook 17 th March 2011 Dave Nattriss – natts.com Limited Facebook Developer Garage London Secretary, webmaster & communications The most popular/most used and hottest (fastest growing): applications/integrations

2. developers

3. brand (fan) pages

4. Popular Facebook applications/integrations Top 10 of 86,527 known apps Top 10 of 125,147 known apps on AppData.com

5. Most regularly used Facebook applications/integrations Top 10 of 86,527 known apps Top 10 of 10,258 known apps on AppData.com

6. Hottest Facebook applications/integrations Top 10 of 86,527 known apps Top 10 of 9,268 known apps on AppData.com

7. Popular Facebook application developers Top 10 of 86,527 known apps Top 10 of 5,605 known developers on AppData.com

8. Hottest Facebook pages Top 10 of 86,527 known apps Top 10 of millions (vanity URLs only), from pagedata.insidefacebook.com

9. Coldest(?) Facebook pages Top 10 of 86,527 known apps Bottom 10 of millions (vanity URLs only), from pagedata.insidefacebook.com