The domain name would be perfect for raising awareness about extreme poverty. The issue is likely closer to home for me though than for a lot of people here.
However, in order to really be useful, that sort of a site needs a huge amount of work and resources. A better use would be the zombie, vampire and lycan idea. Put them in a nice light about how they really just need humans to feed. You could put ads on a site like that to direct people to actual charities though. That could work nicely.