There's two issues here:

#1. Somehow, someone has managed to hijack my browser functionality. I can click on any link and they pop-up some brain dead advertisement. This is independent of the link I click on.

How do I eliminate that hi-jack?

#2. There's commercial interests at heart here. How do I find out who the companies are that are hoping for business, and let them know that they'll never get another dime of my money?

Seems simple enough.