I don't really get why some people are so opposed to paid relays. Problems with existing paid services are that they basically do full KYC on you, and charge very high monthly fees.

If we can do fast, easy, non-KYC payments of small amounts to get around a spam filter, then I'm all for limiting my interactions to people on the other side of the filter (unless I follow somebody explicitly, of course). You want me to see your posts, pay the $0.25 so I know you're a human being. I don't need to know which human you are, just that you are human.

And if you don't care if I see your posts, then that's fine too 👍 It's all opt-in, just like Bitcoin.