Where do you learn about books?

Dear Wiki Members,

Please use the comment box below to tell us about your favorite Readers Advisory sources.    We'll collect all your suggestions and use a cool tool to share them here.  Be sure to include your favorites even if they have already been mentioned; it will be interesting to see what comes to the top.

If you're not a wiki member and want to make a comment, please request access. 

[fabulous future Readers' Advisory resource to be placed here]