DDoS Attacks Target Domain Advertising Services

From Netcraft: : "Domain pay-per-click advertising services have come under siege from digital attackers, with distributed denial of service (DDoS) attacks disrupting advertising on hundreds of thousands of parked domains. The attacks in the past week have targeted Sedo and ParkingSite, two of the largest domain monetization services. Both services say they have issued credits to customers to compensate them for service interruptions."