Started using the code editor in WP rather than the visual editor, as the visual editor annoyed me on a few occasions by mangling my code in ways I didn’t want it to.
In my last post, I typed the <!–more–> "more" seperator the proper way with a space before the close of the comment (i.e. <!–more –>) and the “Continue reading…” link didn’t appear. Not sure if it’s a problem with WordPress or with the K2 theme I’m using… must investigate.
Edit: actually I guess upgrading to the very latest WP version would be a good first move.