"Our celebrities were mobilized and tweeting within an hour and a half of this, telling people how they could give," said spokeswoman Lisa Szarkowski. To increase awareness of the tragedy, UNICEF asked some celebrities to make short video public service announcements that could be posted online and shared across the Internet, she said.
"This early money is what we call smart money. It helps us to order supplies immediately, and that saves lives right now," Szarkowski said.
Some celebs still donated the old fashion way and wrote a check. Angelina Jolie and Brad Pitt gave $1 million to Doctors Without Borders which runs several medical facilities in Haiti.
On Wednesday Oprah Winfrey began her TV talk show by asking viewers to donate to the Red Cross, and Coldplay singer Chris Martin urged his fans to donate to Oxfam. Martin had visited Haiti with Oxfam several years ago.
Magician David Blaine will be in Manhattan's Times Square doing street magic to raise money for the Red Cross.