I have been going after the #1 spot for yet another keyword for one of my websites and today was surprised to see it at the #1 spot, finally, after a 3-4 month battle. I checked these 3 ways: Regular search (so my history was known to G): #4 Incognito Chrome window: #3 Incognito + Hidden IP: #1 I was previously very well positioned at #4 and holding fast. I searched these 3 ways at the same time. I know it could only mean good things, since the other 2 were not going down when I searched, but what does it say about my true global ranking? More of an interest than a concern, I will be #1. That is without a doubt.