Andrew Shapiro explains how the Internet revolution has really affected our lives and identifies the pot holes in the road ahead. Dissidents around the world use the Internet to evade censorship and get their message out. Cyber-gossips send dispatches to thousands via email. Musicians bypass record companies and put their songs on the world wide web for fans to download directly. Day traders roil the stock market, buying securities online with the click of a mouse and then selling minutes later when the price jumps.