When you add a book review on GoodReads I like that you are given the HTML code for your review that you can post on your blog to link back to GR. I do prefer LibraryThing over GoodReads though.
It might be time for LibraryThing to add Your Music/Your Audio/Your Video/Your ebooks, etc. as Library's are not just for books anymore. Or change "Your books" to "Your library" What do you think?