There are a great many worthwhile projects and programs that a person can get involved with over the Internet. The ways we can act in accordance with our beliefs has as many manifestations as there are people who have ideas. While there are some really awesome programs that you can do within your local community, there are also things you can do that effect the world wide community.
The World Needs More Love Letters is a really great little project that I personally think is serving a niche that frequently gets over looked. The premise is that you write an anonymous letter expressing good will and love towards individuals who are selected from a pool of people who could use encouragement. The letter is then sent to the program. The program sends it on to the person in question. They receive a package filled with all of these letters which serves to help them through rough times and restore some faith in humanity.
It is in terms of investment of time and energy on the low end of the scale. It is also a really inexpensive thing to participate in. All your costs is a bit of paper, an envelope, and postage. But the benefits of it are really wonderful. Through this program, you help lift up someone who is in need of encouragement. You create a greater sense of community and goodness within that community. Also, you get all the warm fuzzy feelings that go with doing something to help others in need.
I am, personally, going to be participating in this. Having been in a position where I felt like the world had turned against me, I know just how important little things like words of encouragement from people around you are. And sometimes, the fact that those words of encouragement come from people who are completely outside of the situation makes them resonate better. I don't claim to understand it, but sometimes it works like that.