Goodreads and Shelfari

Do you use Goodreads or Shelfari? Or both? I use both services. Each has features I like, but neither one does everything I want a reading social network to do.

Sharing Progress

Goodreads gives readers the option to share their progress through status updates either with page numbers or percentage read, which is great if you're reading on an e-reader. I really like this feature. I think Shelfari should add it. Both sites do a great job cataloging multiple versions of books so that you can add t...