[Thorentis]

Yes, Gab made their own browser called Dissenter that added a comment section to every page of the Internet. Interestingly, I can find very little when Googling for it now. I'm sure other projects have tried this too.

[HNo]

It was deemed too dangerous by the powers that be, so it was banned from app stores, the extension was banned by Firefox and Chrome, etc.

[dang]

Posting and deleting the same comments dozens of times is seriously abusive and I've banned the account. Please stop now.