The New York Nonprofit Salesforce.com User Group has a Facebook Group:

Membership in the Group is available exclusively to Nonprofit members who have attended a meeting as well as people who have spoken at a meeting. To join you must have a profile on Facebook. While logged into your Facebook profile go to: http://www.facebook.com/group.php?gid=38820872231 (or in the Facebook Search, search for New York Nonprofit Salesforce.com User Group )

At the last User Group meeting we demo'ed two free products that integrate Salesforce and Facebook:

FaceConnect: From within your Salseforce instance, this mashup does a search in Facebook for the Contact or Lead. If the Contact/Lead is your Facebook friend, it shows their interests and your friends in common. Built by Clara Shih, a Salesforce employee, and available on the AppExchange:

Get it on the AppExchange:
https://www.salesforce.com/appexchange/detail_overview.jsp?NavCode__c=&id=a0330000003z9bdAAA

A Demo:
http://www.thefaceforce.com/demo/Faceforce%20Demo.swf

MyFriends@Work:

MyFriends@Work works in a similar way, but originates from Facebook. From within your Facebook instance, you can see which of your Facebook friends are in Salesforce. Built by Appirio and available on their website:

Demo:
http://www.appirio.com/products/myfriendsatwork/demo/appirio_myfriends.htm

To get the application go to:
www.Appirio.com/facebook   

To follow Appirio on Facebook:
http://www.facebook.com/pages/Appirio/16328645810?ref=ts

Best Practices for Facebook for Nonprofits:

• Our group had some confusion about Profiles, Nonprofit (Business) Pages, Groups and Causes- when do you use which one?
• A Cause can collect donations and shows how many people the members have recruited (and how many members they have recruited); Cause use Network for Good to process payment. A Cause can have a Page.
• A Group can also have a Page. I'm told that a Group can also have a Cause. If you have an example of this or know how to do it, please post a comment
• A Nonprofit can have a Cause. People can be a Fan of the Nonprofit
• Facebook discourages Organization to have a Facebook profile for their organization, because it starts to get confusing. Profile are meant for people, not organizations.
• Facebook has Badges, which allow you to direct people to your Facebook Page. gain, please post if you have an example.
• A Nonprofit can become a nonprofit partner on       Causes. Becoming a partner organization will allow you to build and       customize your profile, increase your organization's rankings in search       results, and track causes that benefit your organization. You do not need to become a partner in order to create a cause for your       organization.

NYC User Group Members with Facebook Pages:

Group:

• Mano a Mano: http://www.facebook.com/home.php?#/group.php?gid=19577876028

A Nonprofit Business Page that has a Cause:

• Nonprofit Coordinating Committee of New York:
   
• http://apps.facebook.com/causes/beneficiaries/13557?fb_page_id=14358299361&m=fa71b0af
• http://apps.facebook.com/causes/46970?m=c70121a9&recruiter_id=16607759

A Nonprofit Business Page that lists several Causes (of other organizations):

• ConnCann: http://www.facebook.com/pages/ConnCAN/14358299361?ref=ts

A Nonprofit Business Page that also has a Cause (not listed on the Nonprofit's page):

• Broadway Housing Communities:
• http://apps.facebook.com/causes/75467?m=4a83263b&recruiter_id=16607759
• http://www.facebook.com/pages/New-York-NY/Broadway-Housing-Communities/20733672149?ref=s

A Cause

• Salesforce.com Foundation: http://apps.facebook.com/causes/8381?m=bdb10a6d&recruiter_id=16607759

Questions still being explored:

• Can I post other groups on my group? (I'd like to have a section for other member's groups. This would be good for the related groups section, except that that appears to be something that is automatically generated.)
• Can I have a section of Causes on the Group's page? (I'd like to post all the Causes that my members have created in a section)
• Can I post other Events on the Page? (it appears that I can only post Events that I created)
• Can I customize the URL of my Page?

Clara Shih, creator of FaceConnector and Author of the upcoming book, The Facebook Era: Tap Online Social Networks to Build Better Products, Reach More People, and Sell More Stuff was very gracious in answering our Group's questions and also agreed to speak to our User Group when she is in New York next (date TBD). If you have additional Nonprofit use cases that you would be willing to share with Clara, please post or email to me.

Amazon listing with a book description: http://www.amazon.com/Facebook-Era-online-networks-products/dp/0137152221