Interesting, thanks. I use the app mainly, and it doesn't have those descriptors as far as I know.
I think it's interesting to have the middle/neautral rating described (3 star, middle of the range available) as "liked it" (a positive response).
If you go to rate a book on good reads and hover over each of the the 5 stars, here are the "title" attributes of the links:
* title="did not like it"
* title="it was ok"
* title="liked it"
* title="really liked it"
* title="it was amazing"