Warren Buffett and his friend Bill Gates reportedly joined with David Rockefeller Sr. to invite a group of the world's richest people to gather in one room earlier this month.  The agenda wasn't world domination. It was making philanthropy more effective.  Among the other well-known, and very wealthy names, attending the meeting on May 5 in New York City: Michael Bloomberg, Peter Peterson, George Soros, Ted Turner, and Oprah Winfrey.    Read More