I just re-joined GoodReads a few days ago. I don't know yet if I'll be adding my reviews to the site (perhaps excerpts or just The Nutshell), but it certainly is a great way to keep track of my reading. It's been fun to add my reading lists (which I've started in 2004) to GoodReads and GoodReads allows you to track your reading progress, which I also find handy.
But it's also useful for in case you want to recommend me a book. Now you can check my shelves at Goodreads to see if I've read the book yet or if it's on my TBR-pile 🙂
On a final note – I've taken a new review-portrait yesterday; I plan to have a new review up within the next few days!