Make a Difference, One Instant Message at a Time

Earn money for your favorite cause each time you zip off an instant message on the latest incarnation of MSN Messenger, now rebranded Windows Live Messenger.

Whenever you have a conversation via the free app, Microsoft donates a portion of its advertising revenues to your choice of participating non-profits, which include the American Red Cross, Stop Global Warming, and the Sierra Club. While it isn't clear what percentage this so-called portion represents, each nonprofit is doled a minimum of $100,000, without any cap on a maximum. ::Windows Live Messenger

Difficulty level: Easy