Do you think your employer could be interested in what you post on the internet? [View all]

And do you think that they could be informed of it?

I'm not employed. I'm retired. But I wonder about this considering how much is known about us by corporations that study our purchasing habits on the internet.

Am I just being paranoid about this?

I suppose if you are a waitress in a restaurant, your employer could care less. But what if you have a professional or management position?