Considering how great Google are with regex, if your domain has anything Google in it, the cookies will probably be kept forever. http://www.google.com.somedom

Considering how great Google are with regex, if your domain has anything Google in it, the cookies will probably be kept forever. http://www.google.com.somedomain.com http://www.google.com.somedomain.com Looks a lot like "google.com" to me.