I don't think improving lives only mean going out and saving lives. Hipmunk is improving life by making us get rid of ad-ridden travel sites. I think when he

I don't think improving lives only mean going out and saving lives. Hipmunk is improving life by making us get rid of ad-ridden travel sites. I think when he says 'improve life', he mean create something which is better than what we already have. It can be any market or niche and may target a small user audience too but as long as it's better than what we currently have, it's improving the overall standard of life.