Total posts : 45366
Perhaps the information is stored in browser cookies but my browser is set to clear cookies upon exit and still I see evidence that filtering or targeting is happening. It could be that the info is associated with your IP or MAC address as well.
My wife and I share an IP address and she complains that all she gets back from a search is advertising where I get few ad hits. She buys a lot from the net and I don’t so that may have something to do with it.