
"A new web site has been launched to match volunteers with non-profit organizations."I think I've read or heard this phrase 20 times in the last 15 years.
If the phrase applied to a country other than the USA, maybe I would be impressed. If it served a country in Africa or the Middle East or South America, I would be QUITE impressed. But, unfortunately, new volunteer matching services keep being launched to serve the United States, and offer nothing new. The new sites of volunteer opportunities crowd a field of already-existing volunteer matching sites, most of which are underutilized by volunteer hosting organizations. I always wonder: did the people and organizations who keep launching these new USA volunteer matching sites ever look to see if, perhaps, others already exist?
Organizations that involve volunteers do not have the resources to use all, or even most, of these volunteer matching sites. They are going to choose one, maybe two, and they are usually going to stick with using only that one or those two sites, as they have invested much time in using such and are probably already well-served by such.
Please, no more volunteer matching sites for the USA. There are plenty. In fact, in my opinion, there are too many. If you insist on launching such a site, I offer this advice:
VolunteerMatch (the most popular site for listings of volunteering opportunities in the USA
Idealist/Action Without Borders
AllforGood (this is an aggregator site and collects information from almost all the other sites listed here; note, however, that it screens out all projects soliciting volunteers under the age of 13)
Create the Good (by AARP)
Even better advice: why not pursue the development of an online resource the volunteer-involving sector really needs! For instance:

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