Yea, and the annoying part about Google is that you know that they know you're user X, just not logged in. They know I am logged in to several different accounts from this IP, they know I search for similar stuff under those accounts as I do when not logged in, etc. I feel like it would be more honest for Google to write something like, "Hey, ok_dad, we know it's you, just log in so we can save your porn searches to your account properly, rather than having to do data mining on your nasty habits."