I'd just like to say that these things, whilst well intentioned, are incredibly bad ideas. I have a friend who runs a free donation site called
The Environment Site and he really dislikes these 'bulk donation' programs because nine times out of ten the person click doesn't even see the adverts, thus the advertisers aren't happy and they don't continue to advertise, thus your free donations dry up.
Your intentions are good but please visit the websites themselves to make your clicks.