Rogers boycotter

Does anyone know how to make a boycotter for chrome that will warn you when you enter a Rogers owned site? These pricks are consuming everything. People should know if they're supporting the same shitty company that rips them off every month on their cell phone bill.

Someone made one for Comcast: https://chrome.google.com/webstore/detail/comcast-boycotter/kjpnbbmhefamkdgjhmeamfnbihamndgd