Decided to take a break from big crossovers after finishing all the way to Infinite Crisis Aftermath. Went back and tweaked and tagged starting at the top again (I’ve gotten a little better at it) and now all the books down through Batman: Year Two are tagged (you should notice a lot more Alfred Pennyworth books listed in the tags now, haha).
Then I spent some time making it so a small header appears if you are looking at a book list for a certain Character, Creator, List, or Series. For example, Denny O’Neil or the Silver Age. Figured it would make browsing by tags a little more user friendly.