@FinchHaven I've never heard a website being described as a browser add-on before. Until now I thought browser add-ons are the things you install from like https://addons.mozilla.org/en-US/firefox/ and the Chrome equivalent.
Could you give me an example of another website that is a browser add-on? And is there any way to distinguish them from just regular, old websites? It seems I've missed out on something crucial, and I'm sorry for having caused you any distress on account of that.