Here's the email I recently sent to Paul at Zerofee in London. I had already spoke to Paul, he is a nice guy and has been very helpful with everything so far.

He was very helpful and gave me a great short reply which is exactly what I was looking for to fit in my small format book. Here is Paul's response...
Hi Jimmy
Right, here you go. Please note that I think this question can't really be properly answered in the space of a few sentences, but I'm restricting it here as I know you're not looking for a monologue. I guess you can consider this the 'easy' answer:
Most graphic designers can apportion some of their time to assisting charities, non-profits and causes/campaigns by developing an understanding of their objectives and giving them access to the same (or higher) standards of design that corporations traditionally enjoy. While some charities are financially-capable, the overwhelming majority are financially-challenged and, in experience, sometimes lacking the design ambition and understanding that brands and corporations have developed. This generally results in lower standards of graphic design being applied to their visual communications which, in turn, has a detrimental effect on the way in which they are perceived and understood. A generous and socially-minded graphic designer can apply creative thinking, design consideration and application and see it go a long way; hopefully, as far as creating a tangible benefit for the people the client seeks to represent and help.
Hope that helps. Again, I'm keen to explain that this is really a veneer and that the generalisation afforded by a paragraph doesn't really do the question justice!
Best,
Paul