I like GoodReads– don’t get me wrong, but sometimes I’d rather not leave a lengthy review of a book. And sometimes it’s hard to rate one. Do you put an automatic 5 if you like it? Or should you use a 4 because no book is EVER perfect. It’s just WAY too complicated sometimes.
Riffle gives you one option, click the heart if you like the book. I LOVE that! It’s simple! And I’ll be joining the site just because of that!