As a reading log, I use LibraryThing. I enter books I buy, and mark them as read when I'm done, sometimes with a rating and note. You can also enter books you d

As a reading log, I use LibraryThing. I enter books I buy, and mark them as read when I'm done, sometimes with a rating and note. You can also enter books you don't own, like wish-lists or to-buy lists.