Social Finance
Definition
"Social Finance is the virtual aggregation of dozens, hundreds or millions of people for the purpose of conducting an economic transaction. Social Finance is also known as crowd funding." (http://futurememes.blogspot.com/2006/10/markets-20-social-finance-affinity.html)
More Information
See the related entries on P2P Finance, Peer to Peer Exchanges, Social Commerce, and Affinity Markets