JustMeans is a similar idea (without the elected official angle). Zoosa's site doesn't give much information on who is behind this (they're based in Cambridge, MA), but the site looks a lot like sites such as socialactions.com, though that may be nothing more than site design. Site says "they're not looking for funding now." They will be negotiating sponsorships, advertising, and partnerships. Found nothing useful about them at the WhoIs domain registration site.
"Zoosa.org is an environment where professionals can quickly find social enterprise opportunities which match their interests, skill sets, and time. We make it easier for you to do well while doing good.Zoosa.org includes all positions with a positive social impact (for-profit & non-profit, paid & unpaid)."
By the way, Sean has been posting some great thought pieces on the "business of philanthropy," - a topic so near and dear to my heart it is the subtitle of this blog.
P.S. Thanks to all who have been sending in good wishes - I hope to be back to work and blogging with some regularity as family health situation stabilizes (and assuming Hanna, Ike and Josephine don't prevent me from getting home)