if I post Yvain's best quotes every month, that gets me a lot of karma I don't really deserve.

It's not about posting quotes of third parties that Yvain posted in the quotes thread but choosing quotes from his other writing. Making specific choices about what of his long articles is quote worthy is a decision that adds value.

I don't think we really need to have the same thing in many places, instead of pointing to it many times;

Quoting writing often means to make a choice to select certain passages of writing over other passages. It's not just repeating the same thing.

I believe this has come up and the consensus (or, at least, my position) was that quotes by Scott should not be allowed in the Rationality Quotes thread.

This isn't directly the Rationality Quotes thread and as we are starting a new thread, it's worth to be clear about it's rules.