On: Deploy Websites on Amazon S3 using Jekyll and Git

[zepolen]

That's his point, setting a cookie on the root "domain.com" will mean it's sent to "www.domain.com" or "blog.domain.com" as well. You mostly do not want this.

[moe → zepolen]

Ahem, the text states the opposite of his point.

However, I was a little tongue-in-cheek there. The RFC disagrees, but browsers have been doing it wrong for as long as I can remember. So, in practice he's right... ;)