Every day I get an email reminder to click on The Hunger Site, where every day my single click helps feed the hungry (duplicate clicks from my IP address on the same day don't get counted).
And then, because the tabs are right up there at the top, I cruise over and click The Literary Site, The Animal Rescue Site, etc. and contribute my daily click count there, too. There are only a few tabs, this only takes a minute. One minute, max.
They keep their results online, so you can see how your click adds to thousands of others and produces real help. There are also lots of cool products for sale at reasonable prices that help various efforts, too.
Thought I'd share this -- makes me feel good to do this every day, maybe you'll like contributing Your Daily Click too ....