Why not simply follow the DWG procedure? I do not think you need special rules for your story.
* post your chapter on the DWG board
* if there is one comment you particularly want to reply to, reply to it
* if there are multiple comments you want to reply to, combine your replies into a single post and post it under your chapter with a heading like "Thanks everyone", or write it as a header to your next chapter
* if you want any of your replies to start a conversation, come to the Tea Room
* post your chapter on the DWG board
* if there is one comment you particularly want to reply to, reply to it
* if there are multiple comments you want to reply to, combine your replies into a single post and post it under your chapter with a heading like "Thanks everyone", or write it as a header to your next chapter
* if you want any of your replies to start a conversation, come to the Tea Room