Roger Magoulas of O’Reilly presented some statistics they have collected regarding Facebook Applications.

Application count is up from 500 new applications per week to over 600 new applications per week, climbing up to over what appears to be 17,000 applications. The top 5-10 applications have really been the most successful in terms of usage, with a steep curve downwards for many other apps. 1% of apps account for 77% of volume, 2% account for 86% of volume, 10% account for 98% of volume and 20% account for 99% of volume.

Update: Found a Facebook Analytics site with some good date here.

[tags]gspwest08, Graphing Social, Facebook statistics[/tags]