Causes.com is a startup that uses social media to raise awareness and funds for charities and causes.

CNN: Websites go dark for Sandy Hook moment of silence

And like other supermodels before her, she's becoming her own brand: Last year, she collaborated with Momofuku Milk Bar to launch Karlie's Kookies, a line of vegan treats sold to raise funds for children's charities.

WSJ: The Kloss Family | Meet the Parents

Organisers of the festival, in its 31st year, hope the move will enable them to keep ticket prices unchanged and raise more funds for charities through profits.

BBC: Henley Festival to move for 2014 due to high running costs

The wife of former prime minister Tony Blair has worked to raise both funds and awareness for a wide range of charities at home and overseas.

BBC: Cherie Blair made a CBE for charity work in New Year Honours