I did a search on tags I used to see if my understanding of a tag's use matched others interpretaton. For the most part it worked surprisingly well. Voila, I had another list of titles to check out on the topic. Not bad.
"Members with your books" is another interesting feature; this is a good place to find books you would never find on your own or think much of. I liken it to the patron who comes into the library and looks on the 'recently returned' or 'waiting to be shelved' carts because there are bound to be books, of all stripes, on the cart that someone else liked or read.
I will have to test this out some more and see all its bells and whistles.