Username or EmailPassword
I see that often: "Its scary how much Google knows about me." I am no expert in security, but I am also not sure this idea of Google knowing is properly represented. As a number, they probably know how many freckles there are my bottom, but whether or not my "number" is ever associated with my name is questionable. I think, in many cases, Google has that capacity, but I am not sure they actually ever go that far, or would reveal that information, unless it is in regard to a criminal investigation, which IMO, would then be appropriate. But, truthfully, I don't really know and also am not too concerned. But then...
I've googled the web in depth for information about myself and cannot find anything. Recently, a company that owed me a considerable sum from a long time ago (a long story), tried to contact me using all the tools available for specifically finding people. they reached a dead end. Guess how they found me: through Social Security (which will act as a conduit for messages of this type). Frankly, considering my social security number is somehow connected to almost everything I do, I am much more afraid of Social Security than I am of Google.
I, as one poster noted, also appreciate the targeting Google makes based on my number, as long as they don't call me 666. BTW, the company did pay me, displaying considerable grace and proving that decency is alive and well in America.