Very nice! However, I think the "gain of the many" is misleading in this case - this particular website, as I understand it, is not about supporting large causes, but single individuals - thus, the GoFund**Me**.
Thus, the general purpose of the site is for people to explain why they, specifically, need support. It is pretty much all for "personal gain".
Thus, is that website in itself unethical, because it distracts from other, larger issues than, say, a guy who needs money for tuition or a bike that he couldn't afford otherwise?