Congrats to Ben Rattray on the relaunch of Change.org. The new site features the hum of conversation about causes, driven by blogger/editors hired for the purpose. The currency of giving is relationships, community, passion, and identity. In that matrix money moves as the collection plate moves in a covenanted congregation, or as gifts move among family and friends. The model of the atomized donor "investing" in results by pulling out a credit card, reviewing a pitch, and hitting send is pretty sterile. Ben, I think, has an editorial formula now that will build conversation, community, consciousness, commitment, gifts, and social change.
By the way, Change.org is hiring editors in additional issue areas.