Phones, ereaders, social networks, and blogs. There’s an app for that!
The Android app is so new it’s not even on the apps page yet. A footnote on the iPhone app description says,”Goodreads is not waterproof. Please be careful.” There’s also a mobile site, in case your phone doesn’t have an app yet.
You can sync your Kindle if you have one. There are some other ereader things that I haven’t explored yet, because I don’t have an ereader.
You can set it up so that your updates and reviews are automatically sent by your Facebook, MySpace, FriendFeed, Windows Live, and Twitter accounts, but please be aware that just adding a book to your shelf is sent out as a review.
You can post reviews directly to your blog. If you use WordPress or Blogger.
You can find these apps (and maybe more, they’re adding things all the time) on the apps tab of your goodreads account page. The My Account page is in the drop down menu from your name (click the tiny little arrow beside your name) at the top of any goodreads page.