Proposed feature for Safari: Markup.

Highlights and notes, with Pencil support, as an overlay atop the original page. Personal, not public, but synced via iCloud. I’d use this every day.

@gruber

Sidewiki was killed because admins didn't want their sites "vandalized".

This has been tried once or twice since then, too.

@brianary Well that’s one reason why I’m proposing that the feature be personal, not shared.

@gruber Ah, yes.

Seems like a good Safari feature for parity with native Edge functionality, and some Firefox extensions.