I am new to this socialvibe website so may not be the best if you have any questions, but basically you add a box to your facebook/myspace etc and the sponsors will contribute towards the donations of your chosen charity. The more points you get the more your charity gets - and the more members there are the more money is donated.
Get 2000 points or invite 5 people and get a free pink ball :)
Now i know they are making profit from this, but they are contributing to charity, and you are helping by doing absolutely nothing so please join :).
PS i have been cheeky by using a referall link - this means 100 points are collected for WWF for your signup rather than nothing :P