Now more than ever, nonprofit organizations need to expand their relationships and networks. But in a time when most groups face constraints on money and staff, finding the time and resources can seem impossible

In their new book, The Networked Nonprofit: Connecting With Social Media to Drive Change, Beth Kanter and Allison Fine write about the ways even the most time-pressed nonprofit groups can harness social-media tools to expand their network of donors and volunteers, advocate for their causes, and win attention.

Join us on Thursday, July 15, at noon U.S. Eastern time for a live online discussion with Ms. Kanter and Ms. Fine, who will answer your questions about using social-media tools.