I'm a librarian who loves anime, manga, and reading a wide variety of genres.
In case any of you don't have lifetime LibraryThing accounts, I figured I'd post this opportunity. There are 22 clues for 22 eggs, and if you can find 5 you get a free lifetime account. A little bar pops up at the top of any "egg" page, making it obvious whether you've found one or not.
For those used to the way Goodreads or Booklikes works, LibraryThing has a bit of a learning curve in certain areas, but the nice thing is that your LibraryThing catalog is your catalog. The data you enter for your books is almost completely unlikely to be changed by anyone but you (I'd say completely unlikely, but I'm not 100% sure of that). So if you get annoyed by books or reviews you were sure you had added to your Booklikes shelves mysteriously disappearing, it might be worth considering using LibraryThing as a backup.