Tim Sullivan joined Match.com in January 2001 as chief operating officer and became CEO later that year. In September 2005, Sullivan was replaced as CEO by Jim Safka. Sullivan, who left Match.com effective September 8, 2005, was to remain "within IAC to explore new business opportunities and initiatives." 
According to IAC/InterActiveCorp (IACI) Chairman and CEO Barry Diller, Sullivan expanded Match.com's U.S. online dating market "globally into 29 local language dating markets. During this period, he grew the paid subscriber base for all IAC Personals brands from 189,500 in Q1 2001 to nearly one million in Q2 2004, while growing revenue from $29 million in 2000 to $185 million in 2003." 
"In addition, Mr. Sullivan oversaw Match.com's unrivaled product innovation and international expansion, as well as strategic alliances with MSN and AOL. As a result, Match.com substantially increased its membership base between 2001 and 2004.
"Prior to joining Match.com, Mr. Sullivan served as vice president of e-commerce for Ticketmaster's predecessor, Ticketmaster Online-Citysearch, Inc. Before joining Ticketmaster, Sullivan spent seven years at The Walt Disney Company, where as vice president and managing director for Buena Vista Home Entertainment Asia Pacific, he was responsible for all Home Video distribution of Walt Disney company products in the Asia Pacific Region. Mr. Sullivan is a graduate of Harvard Business School and the University of North Carolina at Chapel Hill."