Guest Post: A Social-Media Experiment Raises Big Money for Small Charity - Social Philanthropy - The Chronicle of Philanthropy- Connecting the nonprofit world with news, jobs, and ideas

Guest Post: A Social-Media Experiment Raises Big Money for Small Charity - Social Philanthropy - The Chronicle of Philanthropy- Connecting the nonprofit world with news, jobs, and ideas: "Estrella Rosenberg didn't set out to raise money when she began experimenting with the social-networking site Foursquare in April.

Ms. Rosenberg, the founder and director of Big Love Little Hearts and One Hundred Squared, in Chicago, was simply trying to see if the location-based social-networking site could be used to stimulate some conversation about her cause, which focuses on congenital heart defects."