Bio: Paul Farrell has published four books on investing: Mutual Funds on the Net, Expert Investing on the Net, The Investors Guide to the Net, and The Winning Portfolio, which was a Money Book-of-the-Month Club bestseller. He developed the Mutual Fund Center for CBS MarketWatch.com, where he has written hundreds of regular columns that also appeared on AOL, Excite.com, Yahoo!, Quicken.com, and other online media.