[Quiet Man Cometh]

So I made a profile over on LibraryThing. It's kinda neat! More for book geeks. You add your books, see who else has them, review, etc. But you can also add basic information about them, and add tags. The neat thing (and this is where it gets geeky) is that when you bring in your book, it comes with all the library/archive cataloging data, so you can see the Library of Congress records and such.

Also, LibraryThing is developing tools for libraries so that they can use the user-made tags and reviews to enhance their local catalogues, so you could search your local library's books via user tags. There's even a "guess the cover" game where you describe a book's cover by adding tags, and get points based on how many other people also used those words. It's just a little thing, but the ultimate goal is to have a search of book covers with these tags so that, if you forget everything about a book except what it looks like, you have a shot at finding it. Librarians apparently get the cover question a lot and it's very hard to actually answer.