I think that everyone has a unique combination of experiences, skills etc. that can be applied somewhere to make the world a better place. Part of the challenge then, is to make sure people know about the work being done in their communities so they can get involved.
One of my favourite things to do on a day off is to get into the community and volunteer. For some of those events, I try to raise money and awareness and for others, I simply put in the hours to get work done. I hope that by blogging about some of the projects I'm involved in, someone out there will find something that resonates with them and motivates them to get involved. My posts will contain useful information on the subject at hand, with the intent for some people to donate or share the message to increase awareness.