It seems like this idea depends on whether it can provide sufficient exposure/traffic for the sponsors, which could be hard. In the end, isn't the value of a twollar just how much traffic that tweet will bring back to twollars.com to the sponsors ad/brand?
In the next version we'll be offering a whole suite of new ways for the sponsors to benefit from Twollars. Including an API which allows them to send the Twollars they buy from a charity to their users. I'll be releasing more details on the blog in the coming weeks.
