A little help?

Don't you just hate it when you can't find that blog or article with the interesting fact that you just saw?  That's me right now.  Over the weekend, I was reading posts on aid for Africa, and one pointed to an article about how the answer may be in selling to the poor in those countries.  Micro-markets, was the term, I think.  Anyway, one company mentioned had developed prosthetics for only $25 apiece.  Anyone see anything like this?  Or any links to similar stories?  Thanks.