Not sure if anyone is already a member of Goodreads, but I just found a and joined a group there called Paranormal and Horror Lovers. It’s all about people coming together on many different forum topics who read horror, write horror, share stories, etc. Plus if you are an author, there are forum topics to spread the word about your books, people can put your book in a wish list or “Want to Read” list and people can review your books. Good networking and marketing spot.
“This is a group focused on sharing the passion we all have for the paranormal, horror and fantasy genre. The aim is to have the spotlight on indie Authors and for them to be able to connect with readers.”