Free Republic

Protesters have been targeting government and corporate websites for years. But when online activists strike at Republican domains during the G.O.P.'s convention later this month, the digital demonstrations might turn out to be more than symbolic, for once. In the past, activists have been able to shut down the website of, say, the World Economic Forum for a few hours. But the impact of such a takedown was nebulous at best: It's hard to argue the organization really suffered from a few-hour lag in posting its press releases online. In this year's presidential race, however, campaign websites have moved beyond...