I've never actually used LJScrapbook before. I hope this works because I won't be around to fix it. (edit: Looks like it does, whew!) All registered LJ users should be able to access the images, so please make sure you're logged in. If you're using the LJLogin extension for Firefox you may have to log out and log in again over the website to get access. They're now set to public, ie. you won't need to have an account / be logged in. :)
Here are the five new gallery promos for season four of Supernatural. They're massive (I'm talking ~6500 px and about 7 MB each), no tags.