Online presence for nonprofits -- more than just a Web site

Details
Besides your own Web site, your nonprofit organization can benefit from being listed in other online services.
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Which services (for example, GuideStar, Charity Navigator, Facebook, NC Center for Nonprofits) is your nonprofit registered with?
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What benefits do the listings bring (for example, donors, volunteers, publicity)?
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How do you maintain current information about your organization in each listing?
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What control do you have over what is posted for and about your organization?
Bring your questions and experiences to this round-table discussion.
This is a new place for us and I haven't been there yet. The plan is that we will purchase something to eat at Food Fare and bring it to the Community Room.
We look forward to seeing you there!

Online presence for nonprofits -- more than just a Web site