Generally, my star ratings follow the Goodreads definitions, but here are the definitions in my own words so you have a better idea of what I mean when I rate a book. Thanks to Kari over at Kari's Crowded Bookshelf for creating the images and allowing me to use them.
1 star - Strongly disliked the book. Would never ever recommend to anyone and wish I had never picked up the book in the first place. I try to avoid this rating except when absolutely necessary.
1.5 stars - Disliked the book, but didn't absolutely hate it. Still wouldn't recommend.
2 stars - The book was just okay. I didn't hate it, didn't love it and probably won't remember it a few days after reading. I may recommend to specific people who I feel would enjoy the story, but not for just anyone.
2.5 stars - Still just okay, but leaning more towards the good side. The story was a little more memorable and I might recommend to a specific reading group.
3 stars - Liked the book, but not a favorite. There were some aspects that either annoyed me or I just plain didn't enjoy. May continue the series and would probably recommend.
3.5 stars - Liked and may end up rereading later on. Will continue the series, and will recommend. Still not a favorite, but still a decent book.
4 stars - Loved the book. Would recommend to just about anyone I meet. Very few aspects annoyed or irritated me and the plot was original. Well-written gets bonus points. :)
5 stars - Absolutely loved, all-time favorite book that comes highly recommended from me. Generally extremely well-written and original. A book that will definitely be purchased for my bookshelves.