A surplus of volunteers?? And you say it like "of course" there are always a surplus of volunteers-- this is news to me. Certainly, one way to attract more organizations is to make this clear, maybe listing how many volunteers expressed interest in each opportunity, and keeping up that historical data about past opportunities for a few months with this data? A site with a surplus of volunteers that apply for every opportunity is a wonderful thing. Maybe some o.net members will be interested, in fact--

You wrote:

<snip> And, yes, the UN has many organizations with whom it collaborates, but you seem to have the notion that the UN is one big organization -- it's not. The UN is made up of several different organizations, such as UNICEF, UNDP, UNIFEM, UNESCO, UNV, etc. And each of these UN branches have their own relationships with various NGOs <snip>

Sooo- taking a step back, do UNICEF UNDP, UNIFEM, UNESCO etc. all know about and use this website for their own opportunities, never mind help their partners with this service??