Hello there, I registered and filled-in a couple of books I've read. I don't see the value of the site though. I see the list of features - marking books I've

Hello there, I registered and filled-in a couple of books I've read. I don't see the value of the site though. I see the list of features - marking books I've read (not sure what's the value) - adding books that I'd like to read into another list (not sure what's the value) - verbally asking for a recommendation (but there I'm missing categories and tags...) Did I miss anything?