I don't really track my reading. Maybe I should have, but I never really saw the point. Besides, most of my reading predates the web. I've been reading since 1966. That said, I did a TON of book recommendations on Reddit at r/booksuggestions and r/SuggestMeABook. I ended up creating a Google doc to store the recommendations I wrote for re-use. That turned out to be a good idea; I separated the recs into genres, and polished them as I noticed mistakes or areas for improvement.
Eventually someone asked me to make that Google doc public, so I did.
Meanwhile I'm on BookWyrm. I was part of a group that left GoodReads when Amazon took over; we set up a community on Google Plus (RIP) to search for alternatives to GoodReads and Amazon (see what I mean about greedy corporations destroying one community after another?). We set up a research project to find and test replacement services. If BookWyrm had existed back then, it would have been far and away the best choice. It needs more development, but I'm willing to wait for that to happen. Meanwhile I'm having fun with it.
One thing for sure: I will NEVER trust a service owned by a plutocrat or corporation ever again.