A lot of deserving folks without an online voice struggle to put the word out when in need (An urgent need for blood, a sudden need for funds for a critical operation). I'm thinking we can tap into influentials to help spread the word (who can earn karma in return).
Bottleneck: As step 1 in this project, I've launched http://www.saveaplusk.org , but ironically it's suffering from the very same problem I want to solve - I have too small a voice to get the word out.