One thing that might be great for the website is after you create a post and pick from the pop-up options of what it would fall under, is if you could pick more than one. So if you have an assignment that is also a fanfiction/thriller you can pull it up through more than one.
Perhaps you could have an additional filter called "What's New" or something, that shows all posts made in the last day right at the top. This may not be super handy at the moment where you can just go to "Most Recent" and scroll until the posts older than a day start showing up, but this suggestion was mostly made with user scaling in mind, where once the site is much more popular, trying to just scroll to the end of a day's worth of posts could mean going past hundreds. A "What's New" filter ensures that everything you're looking at is guaranteed to be recent, and now you can just shift your focus onto visiting those posts.