It is.
Nowadays I do not sign in to Google unless required.
It knows my browsing habbits, my credit card info, my finance details which i record in spreadsheets and it knows what my emails contains!
And if this was not enough, now Google knows where on earth I am..!

Google’s recently unveiled Street View stunned many with its photos of the unsuspecting, from a man climbing a front gate to another walking out of a strip club, but it’s hardly the first time the company has compiled a massive database of material that some would want to remain private. Indeed, Google has for years been storing every Web search and analyzing the topics of Gmail so it can serve customers with related advertisements.
But now that Google is serving up images from the sky with Google Earth, creating street-level images with Street View and tracking customer behavior in cyberspace, some are starting to ask: how much is enough? As blogger Michael Rasmussen wrote in a comment about Street View on the Boing Boing blog, "Damn right, it’s creepy."

Follow this link if you want to know how to hide from Google..