While Matt is still working on harnessing the book data that we all have contributed to, and making it available for searches, he's also been rather busy fixing other things, and even adding some nifty little features. Read all about it in this Announcements forum post.
Titles by Mary Wollstonecraft Shelley, Marilyn Butler
"The only books that influence are those for which we are ready, and which have gone a little farther down our particular path than we have yet to go ourselves."