The following links provide both guidance and analysis about how (and if) to get your Organization on Facebook. For most organizations, there are few reasons to not have a presence on the site and free to setup. The only cost might come if you find yourself spending too much time managing your presence on it (or any other social networking site.

First, read if Should Your Organization Use Social Networking Sites?

So should you invest in creating a profile or networks on social networking sites? It depends on your organization. To succeed with social networking sites, you'll likely need a staff member or consultant who has a passion for working with these types of sites. You'll also need to establish goals to understand if the time commitment is worthwhile. For instance, if you're trying to expand your community, how many new people linked with your cause would make your time worthwhile? Be open to alternative goals, too: Perhaps your primary purpose with social networks is just to get your name in front of the younger members of your audience.

SMUG makes the case for Why Organizations Should Join Facebook Group Land Rush

In reality, you can have an infinite number of groups related to your organization, each with a different purpose.

If you decide to jump on board you'll need the invaluable A Beginner's Guide to Facebook

These nine points are meant to be a starting point for you to get your nonprofit on Facebook and into the social networking world. There are also many examples of nonprofit groups on Facebook