What web address do my posts live at?

Posts live under their own landing page, /posts, created automatically with your first post. It's a system page like your News landing: you can rename its address (to /newsletter, /letters, anything) and edit its layout in the CMS, but it can't be deleted. Your News section stays separate for press and announcements, so the newsletter and the news never mix.

Each post's address is /posts/<its-slug>, and the slug is editable in the post's editor. If a post is ever reached under the wrong address, it forwards permanently to the right one, so links never break.