I’m using LibraryThing, after fleeing GoodReads a few years back, and I just learned about BookWyrm. I’m interested in what others apps and sites are out there for keeping track of your books and/or to-read list, and/or reviewing and/or discussing them, and what folks think about them.
I’ve long used librarything. I really like the amount of adat and data vis it supports. Plus its openness in terms of adding new entries.