Got a high tolerance for advertising? Want to give a little something back to the world without a lot of effort? If you live in New Zealand, check out Donate Your Desktop.
Each day, the app will download a new image from a sponsor to your desktop. A portion of your ad impressions (75% of revenues) will be donated to charity. Recipients include Oxfam, the NZ Breast Cancer Foundation, the Starship Foundation, and the World Wildlife Fund.
If you're worried about seeing hi-res photos of ill children or animals on your desktop, fear not. The ads appear to be tasteful