franco b wrote:I have noticed that when I shop around on the net ads for those things seem to follow me around on other sites.. Somebody is watching me.
Google is watching you. Do you happen to see lot of Google ads on other sites about heating?
When you do a search from Google and/or visit another site serving Google ads they can generate a profile from this information. They set a cookie on your computer to identify you. When you load an ad on this site they read the cookie and then serve you ads based your profile they generated. That's not the only way they could do it either, for example they could go by IP but that becomes problematic because different users can be using same IP.
FYI I believe Google has a specific category of ads they don't serve doing this. If you were searching for something "personal" those types of ads would only show up sites with similar content.
If you wanted to take this even a step further let's suppose you have Google account where you have filled in some personal data like your phone number or email address. They could buy data from a data miner like those store clubs where you might list your phone number or email address on the form. From there they can serve you ads based on what you bought for dinner last night.
Just so it's clear I sharre no data with Google, Google is able to track you becquerel the ads come their server.