"In the following pages, you'll hear about half a dozen moneymaking online companies. Of the four that are publicly traded, all have at least two consecutive quarters of profits as measured by generally accepted accounting principles. (We confirmed the two private companies' profitability with investors, accountants, and business partners.) They are not the usual suspects: They include survivors like Restaurant.com, which most people -- including, at one point, its own CEO -- had given up for dead, and newcomers like poll taker Harris Interactive, which experts swore could never adapt to the Web. Their variety suggests just how broad the online opportunity has become."