I visit Eat Your Books' home page almost every day, because it's fun to check out the new Notes members have left on recipes and books. I usually also take a look at the Indexed Books in the Library, to get a sense of the current speed of the March to 5000 (looking now as if it'll happen in June of 2014). The most recently indexed are at the top of that list, and more than once recently it's been a happy surprise to see books on my Bookshelf appear.
If you sort your unindexed books by popularity, it's definitely worth clicking on each of those to Request Index (by EYB) the ones that are on 40 or more Bookshelves. In that list, any that EYB staff or members are currently working on will have the tag Indexing Now, you can expect to see them show up in your Recipe holdings sooner rather than later.