Tagged books have a red ADULT after their title. If you search for titles including words like "sexy" you will see a mix of tagged and untagged books. This is also a practical way to see what kinds of book they are tagging and what ones they aren't. (e.g. self-publishers are being hit pretty hard).
|Fenanov / Foter / CC BY|
Of course consistency is hard to find when a vanilla M/F set on a ranch is tagged and a collection of stories about having sex with horses is not.