Nonprofits Still Need Facebook

As it turns out, Nonprofits (Surveyed by Kivi Leroux Miller at the Nonprofit Marketing Guide) still see great need in Facebook. In fact when combining Very & Somewhat Important valuations of Facebook, Nonprofits still rank the premier Social Networking site ahead of Twitter, Blogs & In-Person Events.  The next step for Nonprofit Facebook usage is…develop a Strategy (stand alone or integrated), Measure, Repeat.
As a Nonprofit, how do you rank Facebook in relation to your other Communication Tools?  (originally from GoodHalf.Org)