Here are the D2L usage figures for Fall 2012:

D2L Sites = 350
Graded Components (FLC course sections linked to D2L Sites above) = 426
Faculty Using D2L = 150
Student Enrollments = 12,643

The difference between D2L Sites and Graded Components indicates that some faculty maintain a single D2L site for multiple sections of the same class.  For instance, if a faculty member teaches 3 sections of Nutrition 300, they might choose to set up a single D2L site for all three sections.

Here are charts showing FLC’s D2L usage across the above four dimensions from Summer 2008 (when D2L first became available) to the present: