3. Short story index: You should know that there are many s, Short Stories - Indexes. Unfortunately, almost none of these index books are available for searching online (they're certainly not in Books.Google.com), even though they would be incredibly useful to have.
4. Other online collections of stories you might want to search (say, by using site: to restrict your search to just one of these sites): Bartleby.com, Project Gutenberg, The Online Books Page