Here at A Little Reading, I don't rate every book I read. But when I do rate a book, I use the same system I use at LibraryThing. I've tried other systems over the years, but this one seems to work adequately enough.
✭✭✭✭✭ (5 stars) = All-time favorites and new discoveries that I loved — not many get this rating.
✭✭✭✭ (4 stars) = Really liked it, would recommend it; would read this author again.
✭✭✭ (3 stars) = An enjoyable read, but nothing extraordinary; probably most books will fall into this category.
✭✭ (2 stars) = It was OK, I might or might not recommend it to others.
✭ (1 star) = Mediocre; disappointing; had trouble finishing.
DNF (Did Not Finish) = Books I started reading and then abandoned or put aside. This doesn't always mean I didn't like the book, just that I wasn't able to finish it or didn't feel like continuing with it. Might or might not finish it later.
If you read my reviews, you'll notice I sometimes show the rating as stars, sometimes list the rating as points, sometimes as a grade. I'm making an effort to be more consistent with this, but tend to backslide. Also, I haven't always used a rating system with my reviews — again, I'm trying to be more consistent now. But it's a struggle.
My Rating System
MY PERSONAL RATING SYSTEM