Perhaps the most compelling value of guides is that they're always "live" and provide a persistent relationship between the author(s) and your audience.
Discussions
within guides provide an ongoing dialog on specific topics that
provide valuable feedback and opportunities to improve content with
help from your stakeholders and audience.
Users can "like" comments, reply to them, and post private messages that only the author(s) can view and respond to.
With its smart notification system, Guides allows you to reach out to subscribers whenever you make significant changes to your guide or your channel.

Guides provides a direct connection and ongoing engagement that provides a persistent relationship between you and your stakeholders.