I think it would be a great idea if multi chapter stories could be tagged and notification sent or displayed when the author adds chapters to the story.
That's great! You'd probably want to discuss that with the site tech support, Author's Hangout, or perhaps the Editor's Forum. This board is for Literotica Chat Support. Unfortunately, we cannot help you with story formats.
I can't recall seeing the tags on stories I read here. I may add one I like searching, say femdom, but I see no tags or indication of what else in included in the story...such as forced bi watersports, whipping etc..