Mercy, homes, where have you been? For most people the challenge is how to get g### to show you the same search results on any two consecutive occasions. Regardless of what color shirt you're wearing. Regardless of which side of the street you parked on. Regardless of what you had for dinner. Regardless of which way the cat is facing. And so on.
Do you really rank #1 for That Special Keyword, or does g### just put you there because it knows you like that site?