we'd love to see that too. as well as uber here in sf. like my co-founder said here (http://news.ycombinator.com/item?id=4912389), we'd love to see people build all kinds of things like crowdfunding-as-a-service (think kickstarter meets wordpress).

whether it's a feature in a current app like exec/taskrabbit or it's own app like a dinner-bill splitting mobile app (take a picture of the receipt, ocr, text it out, everyone's charged once the total is reached or exceeded, etc) the api was built to help any time groups and money interact... and we hope this renders the ideas devs come up with endless.