Mark T. Hebner is the president of Index Funds Advisors in Irvine, California. His flagship Web site, ifa.com, is considered the leading Internet source of information on index funds. He led a team of over 60 writers, artists, graphic designers, mathematicians, statisticians, and researchers to build the Internet's most comprehensive Web site on index funds. Hebner has been founder, president, and CEO of three companies, one of which became a publicly held corporation. Since discovering the index funds philosophy, he has worked tirelessly to educate the investing public on the advantages of investing in index funds.