I'm in the middle of implementing an analytics feature for patrons, including machine learning algorithms like keyword extraction and text clustering to make sense of a vast quantity of texts.
Even if you just wrote a few words every day for a year, you created a non-negligible body of work. Chances are you already have hidden recurring topics. With these features, cowriters can give you insights on how to group smaller unlabelled posts to produce long-form content.
Judging from my personal results, I found out I already have enough material to write three books: a book on digital nomadism (already writing it), one on developing a writing routine, and another on the maker lifestyle. I'm also starting to develop a corpus on green web development.
If I manage to fine-tune this feature, I could probably make a standalone product. You feed it all your writings and it finds actionable patterns between them.
I could also perform clustering at the sentence or paragraph level, but it probably won't output meaningful results. Well, I can only know if I try.
The key to making writing at The Co-Writers a long-term thing is to manage to bridge the micro and the macro. You keep pushing words every day, and some beautiful day you've got yourself a book thanks to the power of technology.
I also found out the only thing I need to glue a group of texts together is a great story, but that's for another post.