How I might learn to stop worrying and love Google Books
Things that would make me marginally less homicidal (suicidal?) when I'm using Google Books:
1. Items would have the correct title. For example, in addition to the Henry Rogers botch pointed out below, we've got early issues of Dance: Screen & Stage (later Dance Magazine) listed as Patrick White's The Living and the Dead.
2. Snippet view would take you to the text being snipped. Instead, snippet view often takes you to text in the immediate vicinity of what you're searching for, or on the same page as what you're searching for, or several paragraphs down from what you're searching for...
3. All items would have complete publication data. It's not much help if I'm looking at a book with no edition, no publisher, and/or no publication date (or an incorrect publication date).
4. Magazines and journals would have some (any!) publication data. For example, if I go to an old article from Films in Review, I get a page number without the volume, issue number, or year. A number of magazines have been entered with only the year of initial publication. This, when combined with the dreaded snippet view (see above), renders the search function useless: I can't see what I've pulled up (because Google insists on showing me something utterly irrelevant), and I can't ILL the article (because Google provides none of the necessary data).
UPDATE 3/22: Victor Keegan says that "[e]ven while you are reading this, Google and others are scanning libraries of books - including the Bodleian at Oxford - to make tomes that were hitherto hidden available for all to read; in the case of the millions of out-of-copyright and "orphaned" ones, where ownership is unknown, for free." Am I the only one discovering that many nineteenth-century texts are almost entirely confined to the aforementioned snippet view? What possible purpose does that serve, especially since the books are all out of copyright? (I'd love to read Clifford Castle online, as opposed to blowing $145 for a copy on the verge of imminent death, but apparently I can't. Still, I've been able to download some other rare things.)