The full answer is here:
Briefly, - we are allowed to catalog fanfic (and even WIPs). BL might take down a listing at the request of an author depending on the circumstances, BUT they will never remove any reviews from our blog. So, I feel safe adding reviews here.
(For context, Goodreads is taking down fan fiction listings at the request of the authors. If the listing is taken down, all of the ratings and reviews vanish also.)