Others at #PressEdConf20 with Webmentions can reply to your posts on their sites. Replies will show up in comments depending on settings. Bridgy will also find responses to your content on Twitter & syndicate those back to your website automatically.
(Give it a whirl!: Reply to any of the posts in this Twitter thread to see the comments boomerang back to the comment section of my website.)
P.S. There’s still some time to submit your talk for #PressEdConf20. Since it’s all designed to be …