Yes, by title. And I often find out about them from friends, colleagues, and acquaintances. I also find out about a great deal of books from other books, either mentioned or cited/referred to.

I read some books cover to cover, and some are kept as references. Books are mainly on Math, Philosophy, and History. There are other topics, too.

I read in 4 languages and GR is very Anglo-centric. That's another issue.

I wanted to track my to-read and read for every book that I found.

I cannot do that with GR anymore.

(I am unsure to whether you are asking about my use case about the sites or the books. So I answered both.)

very helpful, thank you. Good to learn international use case is working okay for you (I know we can improve). If you're not on our slack already, feel free to email me @ <[email protected]> -- you're welcome to ask questions and weigh so we can continue to try to move in the right direction for you and others.