Is there any easy way to report spam comments?
There used to be a "Report" button. I don't see it anymore, but it's possible that it just doesn't appear for me because I'm a mod. If you find spam comments, you're welcome to PM me a link so I can ban it; I can't speak for other mods.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.