Lend your Spare Home Computer Capacity to Charity

Charity Engine is a small UK-based business that uses spare computing capacity from UK computers to help generate funds for charities. It's website explains:

Charity Engine takes enormous, expensive computing jobs and chops them into 1000s of small pieces, each simple enough for a home PC to work on as a background task. Once each PC has finished its part of the puzzle, it sends back the correct answer and earns some money for charity – and for the prize fund. (It also earns more chances to win.) 

Where does the money come from? Science and industry. The grid is rented like a giant supercomputer, then all the profits shared 50-50 between the charities and the lucky prize winners. 

Charity Engine typically adds less than 10 cents per day to a PC's energy costs and can generate $10-$20 for charity – and the prize draws – for each $1 of electricity consumed.

Okay, it's a profit making business, but if (IF), it's contributing to charity at little cost to the donor, could this be a good thing?

Link: www.charityengine.com