After adding DC and Image Comics to its public library digital-checkout service, Hoopla is back with news that Dark Horse Comics' titles are now available for all your Sin City, Hellboy and Lone Wolf and Cub reading enjoyment. The Hoopla app and service syncs with participating local libraries to offer digital versions of books, audio books, albums, movies, TV shows and of course graphic novels. If you have a library card and your local branches support it the service, you can check out digital versions of media right from your phone or browser. When your item is due back at the library, it just disappears from your account. So if you're a fan of comic books, it's probably a good idea to see if your library supports the app.