Get the Word Out: Event Fundraising Using Social Networking

And, by utilizing "free agents" — individuals working outside the organization who can organize and raise funds — nonprofits can capitalize on the power of social media to get the message out.

Social networks disseminate information
Individuals are more likely to support a cause when asked by someone they know, even if it is not a cause they would have otherwise supported. This is especially true if the audience you are trying to reach is millennials.