Stupid.Patents.com

Ideaflood claims they have a patent on subdomains?

see: Subdomain Patent Sparks Concerns via /.

John McKenzie: "absolutely respond to [letters from Ideaflow asking for license fees], and ask for a clear explanation of the precise nature of the alleged infringement. If this patent does cover something new, the holder still has to demonstrate how the management of sub-domain names infringes on its IP.”

see also: Amazon Awarded Cookie Patent (make sure to read the comments)

Finally: EFF to Fight Dubious Patents