I have read the article Reading Suggestion Engines: Your next Read.

After a quick review of the sites discussed in this article, I really liked Book Seer.  It was so simple to use and offered several good suggestions for additional books to read based on the last book I had read. I felt What Should I Read Next provided the same type of service, but when I typed in my last book, it offered very few suggestions compared to Book Seer.  Yournextread.com also offered many good suggestions based on the last book I read, but the website seemed to have some formatting issues.   Some of the printed words appeared on top of each other next to the suggested books.  This may be a temporary issue.

I also liked Teacher Book Wizard as a helpful resource for parents and librarians to choose additional books for children based on their current reading level. Locating age appropriate books, reading levels and subjects of interest for individual children can be time consuming. This site is one I would recommend.

Jacket Flap looks like an interesting site, but visually very busy. There is so much info on one screen, I found it overwhelming. If I need to spend a lot of time looking for what I want, I am not as likely to use it. If I had a lot of spare time to look over all that this site offers, I might feel differently.

I reviewed CSS ChoiceBook.
It was perfect timing as our library will begin a Lap Sit program this summer and I am still reviewing books I will share with our youngest listeners.
The Lapsit & Baby Programs list will be another resource for me to consider.
A few additional suggestions for Lapsit books I will be sharing are Hide And Squeak by Heather Vogel Frederick and Clip-Clop by Nicola Smee.

I felt the Genre Lists are great for patrons who have specific reading assignments.
This is a site I will definitely be looking at more closely in the future.