Oracle CEO Larry Ellison joined Warren Buffett's campaign to get billionaires to donate the majority of their wealth, helping bring the number of participants to 40.

The effort, called the Giving Pledge, also includes Microsoft Chairman Bill Gates, ""Star Wars"" filmmaker George Lucas, eBay founder Pierre Omidyar and venture capitalist John Doerr.
Ellison, ranked as the world's sixth-richest person, said he has quietly given hundreds of millions of dollars to medical research and education.
""Why am I going public now?"" Ellison said in a note on the Giving Pledge site. ""Warren Buffett personally asked me to write this letter because he said I would be 'setting an example' and 'influencing others' to give. I hope he's right.""
(Source:sfgate.com)