Hello User Firefox-User 13902312,

thank you for your question. The add-ons scans the opened domainname for "amazon" und starts filtering, if it is found. The check is done locally on your computer, so no data is send anywhere.

For my own use filtering "amazon.de" would have been enough, but I found other people in a US-forum that had the same problem with spondored commercials.
So this was just the easiest way to implement this add-on for international use.

If you have a complete list of all amazon-Domains, please post it here, so I can try to implement it.