From Facebook Developer Wiki

Facebook Developer Wiki statistics

There are 9,034 total pages in the database. This includes "talk" pages, pages about Facebook Developer Wiki, minimal "stub" pages, redirects, and others that probably don't qualify as content pages. Excluding those, there are 1,003 pages that are probably legitimate content pages.

441 files have been uploaded.

There have been a total of 44,104,322 page views, and 45,607 page edits since Facebook Developer Wiki was setup. That comes to 5.05 average edits per page, and 967.05 views per edit.

The job queue length is 28.

User statistics

There are 3,169,836 registered users, of which 49 (or 0.00%) have Sysops rights.

Most viewed pages

1. Main Page‎ [5,831,089]
2. FBML‎ [1,620,895]
3. API‎ [1,586,279]
4. Fan Box‎ [1,382,994]
5. Facebook Connect‎ [1,189,803]
6. FBJS‎ [546,320]
7. Creating a Platform Application‎ [504,884]
8. Garage Calendar‎ [368,908]
9. FQL‎ [357,860]
10. Platform Events‎ [252,273]