Since its birth almost twenty years ago, the World Wide Web has transformed our world : A quarter of the planet is now online and able as never before to communicate, publish, and garner information seemingly without limits. But will the Web’s empowerment of ordinary people endure? As part of the BBC’s internet season, the computer expert Doctor Aleks Krotoski starts a four part series (this week) documenting the Web’s remarkable growth and asking if the old hierarchies it challenges are managing to stage a counter revolution.