Here's a really easy way to make the world slightly better. Every time someone clicks on the appropriate little button at povertyfighters.com between now and March 31, the website sponsors will contribute 25 cents to micro-credit poverty relief programs worldwide. It's way easy, and you can click twice a day.
See also Click to make a difference, and the hunger site 'click to donate free food' button which is at the bottom of each page of this blog.
Update: Leave a comment here within the next couple days and John Quiggin will donate $1 to charity on your behalf. How cool is that? See also my earlier discussion of indirect charity appeals.